diff --git a/drizzle/0000_aberrant_deathstrike.sql b/drizzle/0000_aberrant_deathstrike.sql
new file mode 100644
index 0000000..d6cc618
--- /dev/null
+++ b/drizzle/0000_aberrant_deathstrike.sql
@@ -0,0 +1,1560 @@
+CREATE TABLE `academic_years` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`start_date` timestamp NOT NULL,
+	`end_date` timestamp NOT NULL,
+	`is_active` boolean NOT NULL DEFAULT false,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `academic_years_id` PRIMARY KEY(`id`),
+	CONSTRAINT `academic_years_name_unique` UNIQUE(`name`)
+);
+--> statement-breakpoint
+CREATE TABLE `accounts` (
+	`userId` varchar(128) NOT NULL,
+	`type` varchar(255) NOT NULL,
+	`provider` varchar(255) NOT NULL,
+	`providerAccountId` varchar(255) NOT NULL,
+	`refresh_token` text,
+	`access_token` text,
+	`expires_at` int,
+	`token_type` varchar(255),
+	`scope` varchar(255),
+	`id_token` text,
+	`session_state` varchar(255),
+	CONSTRAINT `accounts_provider_providerAccountId_pk` PRIMARY KEY(`provider`,`providerAccountId`)
+);
+--> statement-breakpoint
+CREATE TABLE `ai_providers` (
+	`id` varchar(128) NOT NULL,
+	`provider` enum('zhipu','openai','gemini','custom','ollama') NOT NULL,
+	`base_url` varchar(512),
+	`model` varchar(128) NOT NULL,
+	`api_key_encrypted` text NOT NULL,
+	`api_key_last4` varchar(4),
+	`is_default` boolean NOT NULL DEFAULT false,
+	`visibility` enum('public','private') NOT NULL DEFAULT 'private',
+	`created_by` varchar(128),
+	`updated_by` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `ai_providers_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `announcement_reads` (
+	`id` varchar(128) NOT NULL,
+	`announcement_id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`read_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `announcement_reads_id` PRIMARY KEY(`id`),
+	CONSTRAINT `announcement_reads_unique_idx` UNIQUE(`announcement_id`,`user_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `announcements` (
+	`id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`content` text NOT NULL,
+	`type` enum('school','grade','class') NOT NULL DEFAULT 'school',
+	`status` enum('draft','published','archived') NOT NULL DEFAULT 'draft',
+	`target_grade_id` varchar(128),
+	`target_class_id` varchar(128),
+	`author_id` varchar(128) NOT NULL,
+	`published_at` datetime,
+	`is_pinned` boolean NOT NULL DEFAULT false,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `announcements_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `attendance_records` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`schedule_id` varchar(128),
+	`date` date NOT NULL,
+	`status` enum('present','absent','late','early_leave','excused','school_activity') NOT NULL,
+	`period` enum('morning_reading','morning','afternoon','evening','full_day'),
+	`remark` text,
+	`reason` varchar(255),
+	`recorded_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `attendance_records_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `attendance_rules` (
+	`id` varchar(128) NOT NULL,
+	`class_id` varchar(128),
+	`late_threshold_minutes` int DEFAULT 15,
+	`early_leave_threshold_minutes` int DEFAULT 15,
+	`enable_auto_mark` boolean DEFAULT false,
+	`attendance_rate_threshold` int DEFAULT 90,
+	`consecutive_absence_threshold` int DEFAULT 3,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `attendance_rules_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `audit_logs` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`user_name` varchar(255) NOT NULL,
+	`action` varchar(255) NOT NULL,
+	`module` varchar(128) NOT NULL,
+	`target_id` varchar(128),
+	`target_type` varchar(128),
+	`detail` text,
+	`ip_address` varchar(45),
+	`user_agent` varchar(512),
+	`status` enum('success','failure') NOT NULL DEFAULT 'success',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `audit_logs_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `chapters` (
+	`id` varchar(128) NOT NULL,
+	`textbook_id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`order` int DEFAULT 0,
+	`parent_id` varchar(128),
+	`content` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `chapters_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `class_enrollments` (
+	`class_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`class_enrollment_status` enum('active','inactive') NOT NULL DEFAULT 'active',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `class_enrollments_class_id_student_id_pk` PRIMARY KEY(`class_id`,`student_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `class_invitation_codes` (
+	`id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`code` varchar(8) NOT NULL,
+	`class_invitation_code_status` enum('active','disabled','expired','exhausted') NOT NULL DEFAULT 'active',
+	`max_uses` int,
+	`used_count` int NOT NULL DEFAULT 0,
+	`expires_at` timestamp,
+	`created_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	`revoked_at` timestamp,
+	`revoked_by` varchar(128),
+	`note` varchar(255),
+	CONSTRAINT `class_invitation_codes_id` PRIMARY KEY(`id`),
+	CONSTRAINT `class_invitation_codes_code_unique` UNIQUE(`code`),
+	CONSTRAINT `class_invitation_codes_code_idx` UNIQUE(`code`)
+);
+--> statement-breakpoint
+CREATE TABLE `class_schedule` (
+	`id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`weekday` int NOT NULL,
+	`start_time` varchar(5) NOT NULL,
+	`end_time` varchar(5) NOT NULL,
+	`course` varchar(255) NOT NULL,
+	`location` varchar(100),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `class_schedule_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `class_subject_teachers` (
+	`class_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128) NOT NULL,
+	`teacher_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `class_subject_teachers_class_id_subject_id_pk` PRIMARY KEY(`class_id`,`subject_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `classes` (
+	`id` varchar(128) NOT NULL,
+	`school_name` varchar(255),
+	`school_id` varchar(128),
+	`name` varchar(255) NOT NULL,
+	`grade` varchar(50) NOT NULL,
+	`grade_id` varchar(128),
+	`homeroom` varchar(50),
+	`room` varchar(50),
+	`invitation_code` varchar(6),
+	`teacher_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `classes_id` PRIMARY KEY(`id`),
+	CONSTRAINT `classes_invitation_code_unique` UNIQUE(`invitation_code`)
+);
+--> statement-breakpoint
+CREATE TABLE `classrooms` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255) NOT NULL,
+	`building` varchar(100),
+	`floor` int,
+	`capacity` int,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `classrooms_id` PRIMARY KEY(`id`),
+	CONSTRAINT `classrooms_name_unique` UNIQUE(`name`)
+);
+--> statement-breakpoint
+CREATE TABLE `course_plan_items` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`week` int NOT NULL,
+	`topic` varchar(255) NOT NULL,
+	`content` text,
+	`hours` int NOT NULL DEFAULT 2,
+	`textbook_chapter` varchar(255),
+	`notes` text,
+	`is_completed` boolean NOT NULL DEFAULT false,
+	`completed_at` date,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `course_plan_items_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `course_plans` (
+	`id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128) NOT NULL,
+	`teacher_id` varchar(128) NOT NULL,
+	`academic_year_id` varchar(128),
+	`semester` enum('1','2') NOT NULL DEFAULT '1',
+	`total_hours` int NOT NULL DEFAULT 0,
+	`completed_hours` int NOT NULL DEFAULT 0,
+	`weekly_hours` int NOT NULL DEFAULT 0,
+	`start_date` date,
+	`end_date` date,
+	`syllabus` text,
+	`objectives` text,
+	`status` enum('planning','active','completed','paused') NOT NULL DEFAULT 'planning',
+	`created_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `course_plans_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `course_selections` (
+	`id` varchar(128) NOT NULL,
+	`course_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`selection_status` enum('selected','enrolled','waitlist','dropped','rejected') NOT NULL DEFAULT 'selected',
+	`priority` int DEFAULT 1,
+	`selected_at` timestamp NOT NULL DEFAULT (now()),
+	`enrolled_at` timestamp,
+	`dropped_at` timestamp,
+	`drop_reason` varchar(255),
+	`lottery_rank` int,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `course_selections_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `data_change_logs` (
+	`id` varchar(128) NOT NULL,
+	`table_name` varchar(128) NOT NULL,
+	`record_id` varchar(128) NOT NULL,
+	`action` enum('create','update','delete') NOT NULL,
+	`old_value` text,
+	`new_value` text,
+	`changed_by` varchar(128) NOT NULL,
+	`changed_by_name` varchar(255) NOT NULL,
+	`ip_address` varchar(45),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `data_change_logs_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `departments` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255) NOT NULL,
+	`description` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `departments_id` PRIMARY KEY(`id`),
+	CONSTRAINT `departments_name_unique` UNIQUE(`name`)
+);
+--> statement-breakpoint
+CREATE TABLE `elective_courses` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255) NOT NULL,
+	`subject_id` varchar(128),
+	`teacher_id` varchar(128) NOT NULL,
+	`grade_id` varchar(128),
+	`description` text,
+	`capacity` int NOT NULL DEFAULT 30,
+	`enrolled_count` int NOT NULL DEFAULT 0,
+	`classroom` varchar(100),
+	`schedule` varchar(255),
+	`start_date` date,
+	`end_date` date,
+	`selection_start_at` datetime,
+	`selection_end_at` datetime,
+	`drop_deadline` datetime,
+	`status` enum('draft','open','closed','cancelled') NOT NULL DEFAULT 'draft',
+	`selection_mode` enum('fcfs','lottery') NOT NULL DEFAULT 'fcfs',
+	`credit` decimal(3,1) DEFAULT '1.0',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `elective_courses_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `error_book_items` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`source_type` enum('exam','homework','manual') NOT NULL DEFAULT 'manual',
+	`source_id` varchar(128),
+	`student_answer` json,
+	`correct_answer` json,
+	`subject_id` varchar(128),
+	`knowledge_point_ids` json,
+	`error_status` enum('new','learning','mastered','archived') NOT NULL DEFAULT 'new',
+	`mastery_level` int NOT NULL DEFAULT 0,
+	`next_review_at` timestamp,
+	`review_interval` int NOT NULL DEFAULT 1,
+	`review_count` int NOT NULL DEFAULT 0,
+	`correct_streak` int NOT NULL DEFAULT 0,
+	`note` text,
+	`error_tags` json,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `error_book_items_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `error_book_reviews` (
+	`id` varchar(128) NOT NULL,
+	`item_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`review_result` enum('again','hard','good','easy') NOT NULL,
+	`reviewed_at` timestamp NOT NULL DEFAULT (now()),
+	`new_interval` int,
+	`new_mastery_level` int,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `error_book_reviews_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `exam_proctoring_events` (
+	`id` varchar(128) NOT NULL,
+	`submission_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`exam_id` varchar(128) NOT NULL,
+	`event_type` enum('tab_switch','window_blur','copy_attempt','paste_attempt','right_click','devtools_open','fullscreen_exit','idle_timeout') NOT NULL,
+	`event_detail` text,
+	`occurred_at` timestamp NOT NULL DEFAULT (now()),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `exam_proctoring_events_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `exam_questions` (
+	`exam_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`score` int DEFAULT 0,
+	`order` int DEFAULT 0,
+	CONSTRAINT `exam_questions_exam_id_question_id_pk` PRIMARY KEY(`exam_id`,`question_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `exam_submissions` (
+	`id` varchar(128) NOT NULL,
+	`exam_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`score` int,
+	`status` varchar(50) DEFAULT 'started',
+	`submitted_at` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `exam_submissions_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `exams` (
+	`id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`description` text,
+	`structure` json,
+	`creator_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128),
+	`grade_id` varchar(128),
+	`start_time` timestamp,
+	`end_time` timestamp,
+	`exam_mode` enum('homework','timed','proctored') DEFAULT 'homework',
+	`duration_minutes` int,
+	`shuffle_questions` boolean DEFAULT false,
+	`allow_late_start` boolean DEFAULT false,
+	`late_start_grace_minutes` int DEFAULT 0,
+	`anti_cheat_enabled` boolean DEFAULT false,
+	`status` varchar(50) DEFAULT 'draft',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `exams_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `file_attachments` (
+	`id` varchar(128) NOT NULL,
+	`filename` varchar(255) NOT NULL,
+	`original_name` varchar(255) NOT NULL,
+	`mime_type` varchar(128) NOT NULL,
+	`size` bigint NOT NULL,
+	`storage_path` varchar(512) NOT NULL,
+	`url` varchar(512),
+	`uploader_id` varchar(128) NOT NULL,
+	`target_type` varchar(128),
+	`target_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `file_attachments_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `grade_appeals` (
+	`id` varchar(128) NOT NULL,
+	`grade_record_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`original_score` decimal(6,2) NOT NULL,
+	`expected_score` decimal(6,2),
+	`reason` text NOT NULL,
+	`appeal_status` enum('pending','approved','rejected','withdrawn') NOT NULL DEFAULT 'pending',
+	`reviewer_id` varchar(128),
+	`review_comment` text,
+	`adjusted_score` decimal(6,2),
+	`reviewed_at` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `grade_appeals_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `grade_drafts` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128) NOT NULL,
+	`type` varchar(20) NOT NULL,
+	`content` json NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	`locked_by` varchar(128),
+	`locked_at` timestamp,
+	`lock_token` varchar(64),
+	CONSTRAINT `grade_drafts_id` PRIMARY KEY(`id`),
+	CONSTRAINT `gd_user_class_subject_type_idx` UNIQUE(`user_id`,`class_id`,`subject_id`,`type`)
+);
+--> statement-breakpoint
+CREATE TABLE `grade_record_answers` (
+	`id` varchar(128) NOT NULL,
+	`grade_record_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`score` decimal(6,2) NOT NULL,
+	`full_score` decimal(6,2) NOT NULL,
+	`feedback` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `grade_record_answers_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `grade_records` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128) NOT NULL,
+	`exam_id` varchar(128),
+	`academic_year_id` varchar(128),
+	`title` varchar(255) NOT NULL,
+	`score` decimal(6,2) NOT NULL,
+	`full_score` decimal(6,2) NOT NULL DEFAULT '100',
+	`type` enum('exam','quiz','homework','other') NOT NULL DEFAULT 'exam',
+	`semester` enum('1','2') NOT NULL DEFAULT '1',
+	`recorded_by` varchar(128) NOT NULL,
+	`remark` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `grade_records_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `grades` (
+	`id` varchar(128) NOT NULL,
+	`school_id` varchar(128) NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`order` int NOT NULL DEFAULT 0,
+	`grade_head_id` varchar(128),
+	`teaching_head_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `grades_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `homework_answers` (
+	`id` varchar(128) NOT NULL,
+	`submission_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`answer_content` json,
+	`score` int,
+	`feedback` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `homework_answers_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `homework_assignment_questions` (
+	`assignment_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`score` int DEFAULT 0,
+	`order` int DEFAULT 0,
+	CONSTRAINT `homework_assignment_questions_assignment_id_question_id_pk` PRIMARY KEY(`assignment_id`,`question_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `homework_assignment_targets` (
+	`assignment_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `homework_assignment_targets_assignment_id_student_id_pk` PRIMARY KEY(`assignment_id`,`student_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `homework_assignments` (
+	`id` varchar(128) NOT NULL,
+	`source_exam_id` varchar(128),
+	`title` varchar(255) NOT NULL,
+	`description` text,
+	`structure` json,
+	`status` varchar(50) DEFAULT 'draft',
+	`creator_id` varchar(128) NOT NULL,
+	`available_at` timestamp,
+	`due_at` timestamp,
+	`allow_late` boolean NOT NULL DEFAULT false,
+	`late_due_at` timestamp,
+	`max_attempts` int NOT NULL DEFAULT 1,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `homework_assignments_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `homework_submissions` (
+	`id` varchar(128) NOT NULL,
+	`assignment_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`attempt_no` int NOT NULL DEFAULT 1,
+	`score` int,
+	`status` varchar(50) DEFAULT 'started',
+	`started_at` timestamp NOT NULL DEFAULT (now()),
+	`submitted_at` timestamp,
+	`is_late` boolean NOT NULL DEFAULT false,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `homework_submissions_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `invitation_codes` (
+	`id` varchar(128) NOT NULL,
+	`code` varchar(64) NOT NULL,
+	`email` varchar(255),
+	`role` varchar(50) NOT NULL,
+	`class_id` varchar(128),
+	`notes` varchar(500),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`created_by` varchar(128),
+	`expires_at` timestamp,
+	`used_by` varchar(128),
+	`used_at` timestamp,
+	CONSTRAINT `invitation_codes_id` PRIMARY KEY(`id`),
+	CONSTRAINT `invitation_codes_code_unique` UNIQUE(`code`)
+);
+--> statement-breakpoint
+CREATE TABLE `knowledge_point_mastery` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`knowledge_point_id` varchar(128) NOT NULL,
+	`mastery_level` decimal(5,2) NOT NULL DEFAULT '0',
+	`total_questions` int NOT NULL DEFAULT 0,
+	`correct_questions` int NOT NULL DEFAULT 0,
+	`last_assessed_at` timestamp NOT NULL DEFAULT (now()),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `knowledge_point_mastery_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `knowledge_point_prerequisites` (
+	`knowledge_point_id` varchar(128) NOT NULL,
+	`prerequisite_kp_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `kp_prereq_pk` PRIMARY KEY(`knowledge_point_id`,`prerequisite_kp_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `knowledge_points` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255) NOT NULL,
+	`description` text,
+	`anchor_text` varchar(255),
+	`parent_id` varchar(128),
+	`chapter_id` varchar(128),
+	`level` int DEFAULT 0,
+	`order` int DEFAULT 0,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `knowledge_points_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `learning_diagnostic_reports` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128),
+	`generated_by` varchar(128),
+	`class_id` varchar(128),
+	`grade_id` varchar(128),
+	`report_type` enum('individual','class','grade') NOT NULL DEFAULT 'individual',
+	`period` varchar(50),
+	`summary` text,
+	`strengths` json,
+	`weaknesses` json,
+	`recommendations` json,
+	`overall_score` decimal(5,2),
+	`report_status` enum('draft','published','archived') NOT NULL DEFAULT 'draft',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `learning_diagnostic_reports_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `leave_requests` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`requester_id` varchar(128) NOT NULL,
+	`class_id` varchar(128) NOT NULL,
+	`leave_type` enum('sick','personal','family','other') NOT NULL,
+	`start_date` date NOT NULL,
+	`end_date` date NOT NULL,
+	`reason` text NOT NULL,
+	`leave_status` enum('pending','approved','rejected','cancelled') NOT NULL DEFAULT 'pending',
+	`reviewer_id` varchar(128),
+	`review_comment` text,
+	`reviewed_at` timestamp,
+	`attendance_synced` boolean NOT NULL DEFAULT false,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `leave_requests_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_ai_evaluations` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`version_no` int NOT NULL,
+	`overall_score` int,
+	`dimension_scores` json,
+	`suggestions` text,
+	`recommended_standard_ids` json,
+	`evaluated_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_ai_evaluations_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_analytics_daily` (
+	`id` varchar(128) NOT NULL,
+	`snapshot_date` date NOT NULL,
+	`teacher_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128),
+	`grade_id` varchar(128),
+	`new_plans_count` int NOT NULL DEFAULT 0,
+	`edit_duration_min` int NOT NULL DEFAULT 0,
+	`saved_versions_count` int NOT NULL DEFAULT 0,
+	`submitted_count` int NOT NULL DEFAULT 0,
+	`published_count` int NOT NULL DEFAULT 0,
+	`standards_linked` int NOT NULL DEFAULT 0,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_analytics_daily_id` PRIMARY KEY(`id`),
+	CONSTRAINT `lpad_date_teacher_idx` UNIQUE(`snapshot_date`,`teacher_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_attachments` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`block_id` varchar(128),
+	`file_id` varchar(128) NOT NULL,
+	`display_name` varchar(255) NOT NULL,
+	`attachment_type` varchar(50) NOT NULL DEFAULT 'reference',
+	`uploaded_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_attachments_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_comments` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`block_id` varchar(128) NOT NULL,
+	`content` text NOT NULL,
+	`author_id` varchar(128) NOT NULL,
+	`resolved` boolean NOT NULL DEFAULT false,
+	`parent_comment_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `lesson_plan_comments_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_formative_items` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`block_id` varchar(128) NOT NULL,
+	`interaction_type` varchar(20) NOT NULL,
+	`payload` json NOT NULL,
+	`instant_feedback` boolean NOT NULL DEFAULT false,
+	`order_index` int NOT NULL DEFAULT 0,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `lesson_plan_formative_items_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_formative_responses` (
+	`id` varchar(128) NOT NULL,
+	`item_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`class_id` varchar(128),
+	`response` json NOT NULL,
+	`is_correct` boolean,
+	`duration_sec` int,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_formative_responses_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_review_records` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`reviewer_id` varchar(128) NOT NULL,
+	`decision` varchar(20) NOT NULL,
+	`comment` text,
+	`previous_status` varchar(50) NOT NULL,
+	`new_status` varchar(50) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_review_records_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_standards` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`standard_id` varchar(128) NOT NULL,
+	`relation_type` varchar(20) NOT NULL DEFAULT 'primary',
+	`created_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_standards_id` PRIMARY KEY(`id`),
+	CONSTRAINT `lps_plan_standard_idx` UNIQUE(`plan_id`,`standard_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_substitutes` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`original_teacher_id` varchar(128) NOT NULL,
+	`substitute_teacher_id` varchar(128) NOT NULL,
+	`start_date` date NOT NULL,
+	`end_date` date,
+	`reason` varchar(255),
+	`status` varchar(20) NOT NULL DEFAULT 'active',
+	`created_by` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `lesson_plan_substitutes_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_templates` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`type` varchar(50) NOT NULL,
+	`scope` varchar(50) NOT NULL,
+	`blocks` json NOT NULL,
+	`creator_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `lesson_plan_templates_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plan_versions` (
+	`id` varchar(128) NOT NULL,
+	`plan_id` varchar(128) NOT NULL,
+	`version_no` int NOT NULL,
+	`label` varchar(100),
+	`content` json NOT NULL,
+	`is_auto` boolean NOT NULL DEFAULT false,
+	`creator_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `lesson_plan_versions_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `lesson_plans` (
+	`id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`textbook_id` varchar(128),
+	`chapter_id` varchar(128),
+	`course_plan_item_id` varchar(128),
+	`subject_id` varchar(128),
+	`grade_id` varchar(128),
+	`template_id` varchar(128),
+	`template_name` varchar(100),
+	`content` json NOT NULL,
+	`status` varchar(50) NOT NULL DEFAULT 'draft',
+	`creator_id` varchar(128) NOT NULL,
+	`last_saved_at` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `lesson_plans_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `login_logs` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128),
+	`user_email` varchar(255) NOT NULL,
+	`action` enum('signin','signout','signup') NOT NULL,
+	`status` enum('success','failure') NOT NULL DEFAULT 'success',
+	`ip_address` varchar(45),
+	`user_agent` varchar(512),
+	`error_message` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `login_logs_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `message_drafts` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`receiver_id` varchar(128),
+	`subject` varchar(255),
+	`content` text,
+	`parent_message_id` varchar(128),
+	`device_id` varchar(128),
+	`version` int NOT NULL DEFAULT 1,
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `message_drafts_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `message_notifications` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`type` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`content` text,
+	`link` varchar(512),
+	`is_read` boolean NOT NULL DEFAULT false,
+	`priority` varchar(16) NOT NULL DEFAULT 'normal',
+	`is_archived` boolean NOT NULL DEFAULT false,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `message_notifications_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `message_reports` (
+	`id` varchar(128) NOT NULL,
+	`reporter_id` varchar(128) NOT NULL,
+	`message_id` varchar(128) NOT NULL,
+	`reported_user_id` varchar(128) NOT NULL,
+	`reason` varchar(50) NOT NULL,
+	`description` text,
+	`status` varchar(20) NOT NULL DEFAULT 'pending',
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `message_reports_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `message_templates` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`title` varchar(100) NOT NULL,
+	`content` text NOT NULL,
+	`sort_order` int NOT NULL DEFAULT 0,
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `message_templates_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `messages` (
+	`id` varchar(128) NOT NULL,
+	`sender_id` varchar(128) NOT NULL,
+	`receiver_id` varchar(128) NOT NULL,
+	`subject` varchar(255),
+	`content` text NOT NULL,
+	`is_read` boolean NOT NULL DEFAULT false,
+	`read_at` timestamp,
+	`parent_message_id` varchar(128),
+	`sender_deleted_at` timestamp,
+	`receiver_deleted_at` timestamp,
+	`is_starred` boolean NOT NULL DEFAULT false,
+	`recalled_at` timestamp,
+	`group_message_id` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `messages_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `notification_logs` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`channel` varchar(32) NOT NULL,
+	`status` varchar(16) NOT NULL,
+	`message_id` varchar(255),
+	`error` text,
+	`sent_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `notification_logs_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `notification_preferences` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`email_enabled` boolean NOT NULL DEFAULT false,
+	`sms_enabled` boolean NOT NULL DEFAULT false,
+	`push_enabled` boolean NOT NULL DEFAULT true,
+	`homework_notifications` boolean NOT NULL DEFAULT true,
+	`grade_notifications` boolean NOT NULL DEFAULT true,
+	`announcement_notifications` boolean NOT NULL DEFAULT true,
+	`message_notifications` boolean NOT NULL DEFAULT true,
+	`attendance_notifications` boolean NOT NULL DEFAULT true,
+	`quiet_hours_enabled` boolean NOT NULL DEFAULT false,
+	`quiet_hours_start` varchar(5),
+	`quiet_hours_end` varchar(5),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `notification_preferences_id` PRIMARY KEY(`id`),
+	CONSTRAINT `notification_preferences_user_id_unique` UNIQUE(`user_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `parent_student_relations` (
+	`id` varchar(128) NOT NULL,
+	`parent_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`relation` varchar(50),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `parent_student_relations_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `password_security` (
+	`id` varchar(128) NOT NULL,
+	`user_id` varchar(128) NOT NULL,
+	`failed_login_attempts` int NOT NULL DEFAULT 0,
+	`locked_until` timestamp,
+	`password_changed_at` timestamp NOT NULL DEFAULT (now()),
+	`must_change_password` boolean NOT NULL DEFAULT false,
+	`last_password_change` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `password_security_id` PRIMARY KEY(`id`),
+	CONSTRAINT `password_security_user_id_unique` UNIQUE(`user_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `practice_answers` (
+	`id` varchar(128) NOT NULL,
+	`session_id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`variant_content` json,
+	`is_variant` boolean NOT NULL DEFAULT false,
+	`order_index` int NOT NULL,
+	`practice_answer_status` enum('pending','answered','skipped') NOT NULL DEFAULT 'pending',
+	`student_answer` json,
+	`is_correct` boolean,
+	`score` int,
+	`max_score` int NOT NULL DEFAULT 1,
+	`answered_at` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `practice_answers_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `practice_sessions` (
+	`id` varchar(128) NOT NULL,
+	`student_id` varchar(128) NOT NULL,
+	`subject_id` varchar(128),
+	`practice_type` enum('error_variant','knowledge_point','weak_chapter','ai_recommended') NOT NULL,
+	`source_meta` json,
+	`practice_status` enum('in_progress','completed','abandoned') NOT NULL DEFAULT 'in_progress',
+	`total_questions` int NOT NULL DEFAULT 0,
+	`answered_questions` int NOT NULL DEFAULT 0,
+	`correct_count` int NOT NULL DEFAULT 0,
+	`started_at` timestamp NOT NULL DEFAULT (now()),
+	`completed_at` timestamp,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `practice_sessions_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `questions` (
+	`id` varchar(128) NOT NULL,
+	`content` json NOT NULL,
+	`type` enum('single_choice','multiple_choice','text','judgment','composite') NOT NULL,
+	`difficulty` int DEFAULT 1,
+	`parent_id` varchar(128),
+	`author_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `questions_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `questions_to_knowledge_points` (
+	`question_id` varchar(128) NOT NULL,
+	`knowledge_point_id` varchar(128) NOT NULL,
+	CONSTRAINT `questions_to_knowledge_points_question_id_knowledge_point_id_pk` PRIMARY KEY(`question_id`,`knowledge_point_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `role_permissions` (
+	`role_id` varchar(128) NOT NULL,
+	`permission` varchar(100) NOT NULL,
+	CONSTRAINT `role_permissions_role_id_permission_pk` PRIMARY KEY(`role_id`,`permission`)
+);
+--> statement-breakpoint
+CREATE TABLE `roles` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(50) NOT NULL,
+	`description` varchar(255),
+	`is_system` boolean NOT NULL DEFAULT false,
+	`is_enabled` boolean NOT NULL DEFAULT true,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `roles_id` PRIMARY KEY(`id`),
+	CONSTRAINT `roles_name_unique` UNIQUE(`name`)
+);
+--> statement-breakpoint
+CREATE TABLE `schedule_changes` (
+	`id` varchar(128) NOT NULL,
+	`original_schedule_id` varchar(128),
+	`class_id` varchar(128) NOT NULL,
+	`original_teacher_id` varchar(128),
+	`substitute_teacher_id` varchar(128),
+	`original_date` date,
+	`new_date` date,
+	`new_start_time` varchar(10),
+	`new_end_time` varchar(10),
+	`reason` text,
+	`status` enum('pending','approved','rejected','completed') NOT NULL DEFAULT 'pending',
+	`requested_by` varchar(128) NOT NULL,
+	`approved_by` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `schedule_changes_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `scheduling_rules` (
+	`id` varchar(128) NOT NULL,
+	`class_id` varchar(128),
+	`max_daily_hours` int DEFAULT 8,
+	`max_continuous_hours` int DEFAULT 2,
+	`lunch_break_start` varchar(10) DEFAULT '12:00',
+	`lunch_break_end` varchar(10) DEFAULT '13:00',
+	`morning_start` varchar(10) DEFAULT '08:00',
+	`afternoon_end` varchar(10) DEFAULT '17:00',
+	`avoid_back_to_back` boolean DEFAULT false,
+	`balanced_subjects` boolean DEFAULT true,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `scheduling_rules_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `schools` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255) NOT NULL,
+	`code` varchar(50),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `schools_id` PRIMARY KEY(`id`),
+	CONSTRAINT `schools_name_unique` UNIQUE(`name`),
+	CONSTRAINT `schools_code_unique` UNIQUE(`code`)
+);
+--> statement-breakpoint
+CREATE TABLE `sessions` (
+	`sessionToken` varchar(255) NOT NULL,
+	`userId` varchar(128) NOT NULL,
+	`expires` timestamp NOT NULL,
+	CONSTRAINT `sessions_sessionToken` PRIMARY KEY(`sessionToken`)
+);
+--> statement-breakpoint
+CREATE TABLE `standards` (
+	`id` varchar(128) NOT NULL,
+	`code` varchar(100) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`description` text,
+	`level` varchar(20) NOT NULL,
+	`parent_id` varchar(128),
+	`subject_id` varchar(128),
+	`grade_id` varchar(128),
+	`stage` varchar(20),
+	`sort_order` int NOT NULL DEFAULT 0,
+	`is_active` boolean NOT NULL DEFAULT true,
+	`created_by` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `standards_id` PRIMARY KEY(`id`),
+	CONSTRAINT `std_code_idx` UNIQUE(`code`)
+);
+--> statement-breakpoint
+CREATE TABLE `subjects` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(100) NOT NULL,
+	`code` varchar(50),
+	`order` int DEFAULT 0,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `subjects_id` PRIMARY KEY(`id`),
+	CONSTRAINT `subjects_name_unique` UNIQUE(`name`),
+	CONSTRAINT `subjects_code_unique` UNIQUE(`code`)
+);
+--> statement-breakpoint
+CREATE TABLE `submission_answers` (
+	`id` varchar(128) NOT NULL,
+	`submission_id` varchar(128) NOT NULL,
+	`question_id` varchar(128) NOT NULL,
+	`answer_content` json,
+	`score` int,
+	`feedback` text,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `submission_answers_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `system_settings` (
+	`id` varchar(128) NOT NULL,
+	`category` varchar(50) NOT NULL,
+	`key` varchar(100) NOT NULL,
+	`value` text NOT NULL,
+	`value_type` varchar(20) NOT NULL DEFAULT 'string',
+	`updated_by` varchar(128),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `system_settings_id` PRIMARY KEY(`id`),
+	CONSTRAINT `ss_category_key_idx` UNIQUE(`category`,`key`)
+);
+--> statement-breakpoint
+CREATE TABLE `textbooks` (
+	`id` varchar(128) NOT NULL,
+	`title` varchar(255) NOT NULL,
+	`subject` varchar(100) NOT NULL,
+	`grade` varchar(50),
+	`publisher` varchar(100),
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `textbooks_id` PRIMARY KEY(`id`)
+);
+--> statement-breakpoint
+CREATE TABLE `user_blocks` (
+	`id` varchar(128) NOT NULL,
+	`blocker_id` varchar(128) NOT NULL,
+	`blocked_id` varchar(128) NOT NULL,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	CONSTRAINT `user_blocks_id` PRIMARY KEY(`id`),
+	CONSTRAINT `user_blocks_blocker_blocked_uniq` UNIQUE(`blocker_id`,`blocked_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `users` (
+	`id` varchar(128) NOT NULL,
+	`name` varchar(255),
+	`email` varchar(255) NOT NULL,
+	`emailVerified` timestamp,
+	`image` varchar(255),
+	`password` varchar(255),
+	`phone` varchar(30),
+	`address` varchar(255),
+	`gender` varchar(20),
+	`age` int,
+	`grade_id` varchar(128),
+	`department_id` varchar(128),
+	`onboarded_at` timestamp,
+	`birth_date` date,
+	`guardian_name` varchar(255),
+	`guardian_phone` varchar(20),
+	`guardian_relation` varchar(50),
+	`consent_accepted_at` datetime,
+	`created_at` timestamp NOT NULL DEFAULT (now()),
+	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
+	CONSTRAINT `users_id` PRIMARY KEY(`id`),
+	CONSTRAINT `users_email_unique` UNIQUE(`email`)
+);
+--> statement-breakpoint
+CREATE TABLE `users_to_roles` (
+	`user_id` varchar(128) NOT NULL,
+	`role_id` varchar(128) NOT NULL,
+	CONSTRAINT `users_to_roles_user_id_role_id_pk` PRIMARY KEY(`user_id`,`role_id`)
+);
+--> statement-breakpoint
+CREATE TABLE `verificationTokens` (
+	`identifier` varchar(255) NOT NULL,
+	`token` varchar(255) NOT NULL,
+	`expires` timestamp NOT NULL,
+	CONSTRAINT `verificationTokens_identifier_token_pk` PRIMARY KEY(`identifier`,`token`)
+);
+--> statement-breakpoint
+ALTER TABLE `accounts` ADD CONSTRAINT `accounts_userId_users_id_fk` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `announcement_reads` ADD CONSTRAINT `announcement_reads_announcement_id_announcements_id_fk` FOREIGN KEY (`announcement_id`) REFERENCES `announcements`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `announcement_reads` ADD CONSTRAINT `announcement_reads_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `announcements` ADD CONSTRAINT `announcements_author_id_users_id_fk` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_recorded_by_users_id_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_rb_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_rules` ADD CONSTRAINT `attendance_rules_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `attendance_rules` ADD CONSTRAINT `atr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `chapters` ADD CONSTRAINT `chapters_textbook_id_textbooks_id_fk` FOREIGN KEY (`textbook_id`) REFERENCES `textbooks`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_enrollments` ADD CONSTRAINT `ce_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_enrollments` ADD CONSTRAINT `ce_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `class_invitation_codes_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `class_invitation_codes_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `cic_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_schedule` ADD CONSTRAINT `cs_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `class_subject_teachers_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `cst_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `cst_s_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `classes` ADD CONSTRAINT `classes_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `classes` ADD CONSTRAINT `c_s_fk` FOREIGN KEY (`school_id`) REFERENCES `schools`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `classes` ADD CONSTRAINT `c_g_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plan_items` ADD CONSTRAINT `course_plan_items_plan_id_course_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `course_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plan_items` ADD CONSTRAINT `cpi_p_fk` FOREIGN KEY (`plan_id`) REFERENCES `course_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `cp_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `cp_s_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `cp_t_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_plans` ADD CONSTRAINT `cp_cb_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_selections` ADD CONSTRAINT `course_selections_course_id_elective_courses_id_fk` FOREIGN KEY (`course_id`) REFERENCES `elective_courses`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `course_selections` ADD CONSTRAINT `course_selections_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `error_book_items` ADD CONSTRAINT `error_book_items_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `error_book_items` ADD CONSTRAINT `error_book_items_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `error_book_reviews` ADD CONSTRAINT `error_book_reviews_item_id_error_book_items_id_fk` FOREIGN KEY (`item_id`) REFERENCES `error_book_items`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `error_book_reviews` ADD CONSTRAINT `error_book_reviews_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_submission_id_exam_submissions_id_fk` FOREIGN KEY (`submission_id`) REFERENCES `exam_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_questions` ADD CONSTRAINT `exam_questions_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_questions` ADD CONSTRAINT `exam_questions_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_submissions` ADD CONSTRAINT `exam_submissions_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exam_submissions` ADD CONSTRAINT `exam_submissions_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exams` ADD CONSTRAINT `exams_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exams` ADD CONSTRAINT `exams_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `exams` ADD CONSTRAINT `exams_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `file_attachments` ADD CONSTRAINT `file_attachments_uploader_id_users_id_fk` FOREIGN KEY (`uploader_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_appeals` ADD CONSTRAINT `grade_appeals_grade_record_id_grade_records_id_fk` FOREIGN KEY (`grade_record_id`) REFERENCES `grade_records`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_appeals` ADD CONSTRAINT `grade_appeals_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_appeals` ADD CONSTRAINT `grade_appeals_reviewer_id_users_id_fk` FOREIGN KEY (`reviewer_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_drafts` ADD CONSTRAINT `grade_drafts_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_drafts` ADD CONSTRAINT `grade_drafts_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_drafts` ADD CONSTRAINT `grade_drafts_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_record_answers` ADD CONSTRAINT `grade_record_answers_grade_record_id_grade_records_id_fk` FOREIGN KEY (`grade_record_id`) REFERENCES `grade_records`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_record_answers` ADD CONSTRAINT `grade_record_answers_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_record_answers` ADD CONSTRAINT `gra_gr_fk` FOREIGN KEY (`grade_record_id`) REFERENCES `grade_records`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_record_answers` ADD CONSTRAINT `gra_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_recorded_by_users_id_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `gr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `gr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `gr_sub_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grade_records` ADD CONSTRAINT `gr_rb_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grades` ADD CONSTRAINT `g_s_fk` FOREIGN KEY (`school_id`) REFERENCES `schools`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grades` ADD CONSTRAINT `g_gh_fk` FOREIGN KEY (`grade_head_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `grades` ADD CONSTRAINT `g_th_fk` FOREIGN KEY (`teaching_head_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_answers` ADD CONSTRAINT `hw_ans_sub_fk` FOREIGN KEY (`submission_id`) REFERENCES `homework_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_answers` ADD CONSTRAINT `hw_ans_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignment_questions` ADD CONSTRAINT `hw_aq_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignment_questions` ADD CONSTRAINT `hw_aq_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignment_targets` ADD CONSTRAINT `hw_at_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignment_targets` ADD CONSTRAINT `hw_at_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignments` ADD CONSTRAINT `hw_asg_exam_fk` FOREIGN KEY (`source_exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_assignments` ADD CONSTRAINT `hw_asg_creator_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_submissions` ADD CONSTRAINT `hw_sub_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `homework_submissions` ADD CONSTRAINT `hw_sub_student_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `knowledge_point_mastery` ADD CONSTRAINT `kpm_student_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `knowledge_point_mastery` ADD CONSTRAINT `kpm_kp_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `knowledge_point_prerequisites` ADD CONSTRAINT `kp_prereq_kp_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `knowledge_point_prerequisites` ADD CONSTRAINT `kp_prereq_prereq_fk` FOREIGN KEY (`prerequisite_kp_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_generated_by_users_id_fk` FOREIGN KEY (`generated_by`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `leave_requests_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `leave_requests_requester_id_users_id_fk` FOREIGN KEY (`requester_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `leave_requests_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `leave_requests_reviewer_id_users_id_fk` FOREIGN KEY (`reviewer_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `lr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `lr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `lr_rq_fk` FOREIGN KEY (`requester_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `leave_requests` ADD CONSTRAINT `lr_rv_fk` FOREIGN KEY (`reviewer_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_ai_evaluations` ADD CONSTRAINT `lesson_plan_ai_evaluations_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_analytics_daily` ADD CONSTRAINT `lesson_plan_analytics_daily_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_attachments` ADD CONSTRAINT `lesson_plan_attachments_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_attachments` ADD CONSTRAINT `lesson_plan_attachments_uploaded_by_users_id_fk` FOREIGN KEY (`uploaded_by`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_comments` ADD CONSTRAINT `lesson_plan_comments_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_comments` ADD CONSTRAINT `lesson_plan_comments_author_id_users_id_fk` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_formative_items` ADD CONSTRAINT `lesson_plan_formative_items_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_formative_responses` ADD CONSTRAINT `lesson_plan_formative_responses_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_formative_responses` ADD CONSTRAINT `lpfr_item_fk` FOREIGN KEY (`item_id`) REFERENCES `lesson_plan_formative_items`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_review_records` ADD CONSTRAINT `lesson_plan_review_records_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_review_records` ADD CONSTRAINT `lesson_plan_review_records_reviewer_id_users_id_fk` FOREIGN KEY (`reviewer_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_standards` ADD CONSTRAINT `lesson_plan_standards_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_standards` ADD CONSTRAINT `lesson_plan_standards_standard_id_standards_id_fk` FOREIGN KEY (`standard_id`) REFERENCES `standards`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_standards` ADD CONSTRAINT `lesson_plan_standards_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_substitutes` ADD CONSTRAINT `lesson_plan_substitutes_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_substitutes` ADD CONSTRAINT `lesson_plan_substitutes_original_teacher_id_users_id_fk` FOREIGN KEY (`original_teacher_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_substitutes` ADD CONSTRAINT `lesson_plan_substitutes_substitute_teacher_id_users_id_fk` FOREIGN KEY (`substitute_teacher_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_substitutes` ADD CONSTRAINT `lesson_plan_substitutes_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_templates` ADD CONSTRAINT `lesson_plan_templates_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_versions` ADD CONSTRAINT `lesson_plan_versions_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plan_versions` ADD CONSTRAINT `lesson_plan_versions_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_textbook_id_textbooks_id_fk` FOREIGN KEY (`textbook_id`) REFERENCES `textbooks`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_chapter_id_chapters_id_fk` FOREIGN KEY (`chapter_id`) REFERENCES `chapters`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_drafts` ADD CONSTRAINT `message_drafts_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_drafts` ADD CONSTRAINT `message_drafts_receiver_id_users_id_fk` FOREIGN KEY (`receiver_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_notifications` ADD CONSTRAINT `message_notifications_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_reports` ADD CONSTRAINT `message_reports_reporter_id_users_id_fk` FOREIGN KEY (`reporter_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_reports` ADD CONSTRAINT `message_reports_message_id_messages_id_fk` FOREIGN KEY (`message_id`) REFERENCES `messages`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_reports` ADD CONSTRAINT `message_reports_reported_user_id_users_id_fk` FOREIGN KEY (`reported_user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `message_templates` ADD CONSTRAINT `message_templates_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `messages` ADD CONSTRAINT `messages_sender_id_users_id_fk` FOREIGN KEY (`sender_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `messages` ADD CONSTRAINT `messages_receiver_id_users_id_fk` FOREIGN KEY (`receiver_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `notification_logs` ADD CONSTRAINT `notification_logs_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `notification_preferences` ADD CONSTRAINT `notification_preferences_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `notification_preferences` ADD CONSTRAINT `np_u_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `parent_student_relations` ADD CONSTRAINT `parent_student_relations_parent_id_users_id_fk` FOREIGN KEY (`parent_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `parent_student_relations` ADD CONSTRAINT `parent_student_relations_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `parent_student_relations` ADD CONSTRAINT `psr_p_fk` FOREIGN KEY (`parent_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `parent_student_relations` ADD CONSTRAINT `psr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `password_security` ADD CONSTRAINT `password_security_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `password_security` ADD CONSTRAINT `ps_u_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `practice_answers` ADD CONSTRAINT `practice_answers_session_id_practice_sessions_id_fk` FOREIGN KEY (`session_id`) REFERENCES `practice_sessions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `practice_answers` ADD CONSTRAINT `practice_answers_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `practice_answers` ADD CONSTRAINT `practice_answers_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `practice_sessions` ADD CONSTRAINT `practice_sessions_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `questions` ADD CONSTRAINT `questions_author_id_users_id_fk` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `questions_to_knowledge_points` ADD CONSTRAINT `q_kp_qid_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `questions_to_knowledge_points` ADD CONSTRAINT `q_kp_kpid_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `role_permissions` ADD CONSTRAINT `role_permissions_role_id_roles_id_fk` FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `sessions` ADD CONSTRAINT `sessions_userId_users_id_fk` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `standards` ADD CONSTRAINT `standards_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `standards` ADD CONSTRAINT `standards_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `standards` ADD CONSTRAINT `standards_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `submission_answers` ADD CONSTRAINT `submission_answers_submission_id_exam_submissions_id_fk` FOREIGN KEY (`submission_id`) REFERENCES `exam_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `submission_answers` ADD CONSTRAINT `submission_answers_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `user_blocks` ADD CONSTRAINT `user_blocks_blocker_id_users_id_fk` FOREIGN KEY (`blocker_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `user_blocks` ADD CONSTRAINT `user_blocks_blocked_id_users_id_fk` FOREIGN KEY (`blocked_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `users_to_roles` ADD CONSTRAINT `users_to_roles_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE `users_to_roles` ADD CONSTRAINT `users_to_roles_role_id_roles_id_fk` FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX `academic_years_name_idx` ON `academic_years` (`name`);--> statement-breakpoint
+CREATE INDEX `academic_years_active_idx` ON `academic_years` (`is_active`);--> statement-breakpoint
+CREATE INDEX `account_userId_idx` ON `accounts` (`userId`);--> statement-breakpoint
+CREATE INDEX `ai_provider_idx` ON `ai_providers` (`provider`);--> statement-breakpoint
+CREATE INDEX `ai_provider_default_idx` ON `ai_providers` (`is_default`);--> statement-breakpoint
+CREATE INDEX `ai_provider_visibility_idx` ON `ai_providers` (`visibility`);--> statement-breakpoint
+CREATE INDEX `ai_provider_created_by_idx` ON `ai_providers` (`created_by`);--> statement-breakpoint
+CREATE INDEX `announcement_reads_announcement_idx` ON `announcement_reads` (`announcement_id`);--> statement-breakpoint
+CREATE INDEX `announcement_reads_user_idx` ON `announcement_reads` (`user_id`);--> statement-breakpoint
+CREATE INDEX `announcements_author_idx` ON `announcements` (`author_id`);--> statement-breakpoint
+CREATE INDEX `announcements_status_idx` ON `announcements` (`status`);--> statement-breakpoint
+CREATE INDEX `announcements_type_idx` ON `announcements` (`type`);--> statement-breakpoint
+CREATE INDEX `announcements_target_grade_idx` ON `announcements` (`target_grade_id`);--> statement-breakpoint
+CREATE INDEX `announcements_target_class_idx` ON `announcements` (`target_class_id`);--> statement-breakpoint
+CREATE INDEX `announcements_status_pinned_idx` ON `announcements` (`status`,`is_pinned`);--> statement-breakpoint
+CREATE INDEX `attendance_records_student_idx` ON `attendance_records` (`student_id`);--> statement-breakpoint
+CREATE INDEX `attendance_records_class_idx` ON `attendance_records` (`class_id`);--> statement-breakpoint
+CREATE INDEX `attendance_records_date_idx` ON `attendance_records` (`date`);--> statement-breakpoint
+CREATE INDEX `attendance_records_class_date_idx` ON `attendance_records` (`class_id`,`date`);--> statement-breakpoint
+CREATE INDEX `attendance_records_student_date_idx` ON `attendance_records` (`student_id`,`date`);--> statement-breakpoint
+CREATE INDEX `attendance_records_schedule_idx` ON `attendance_records` (`schedule_id`);--> statement-breakpoint
+CREATE INDEX `attendance_records_recorded_by_idx` ON `attendance_records` (`recorded_by`);--> statement-breakpoint
+CREATE INDEX `attendance_records_class_date_period_idx` ON `attendance_records` (`class_id`,`date`,`period`);--> statement-breakpoint
+CREATE INDEX `attendance_rules_class_idx` ON `attendance_rules` (`class_id`);--> statement-breakpoint
+CREATE INDEX `audit_logs_user_id_idx` ON `audit_logs` (`user_id`);--> statement-breakpoint
+CREATE INDEX `audit_logs_module_idx` ON `audit_logs` (`module`);--> statement-breakpoint
+CREATE INDEX `audit_logs_action_idx` ON `audit_logs` (`action`);--> statement-breakpoint
+CREATE INDEX `audit_logs_status_idx` ON `audit_logs` (`status`);--> statement-breakpoint
+CREATE INDEX `audit_logs_created_at_idx` ON `audit_logs` (`created_at`);--> statement-breakpoint
+CREATE INDEX `textbook_idx` ON `chapters` (`textbook_id`);--> statement-breakpoint
+CREATE INDEX `parent_id_idx` ON `chapters` (`parent_id`);--> statement-breakpoint
+CREATE INDEX `class_enrollments_class_idx` ON `class_enrollments` (`class_id`);--> statement-breakpoint
+CREATE INDEX `class_enrollments_student_idx` ON `class_enrollments` (`student_id`);--> statement-breakpoint
+CREATE INDEX `class_invitation_codes_class_idx` ON `class_invitation_codes` (`class_id`);--> statement-breakpoint
+CREATE INDEX `class_invitation_codes_status_expires_idx` ON `class_invitation_codes` (`class_invitation_code_status`,`expires_at`);--> statement-breakpoint
+CREATE INDEX `class_schedule_class_idx` ON `class_schedule` (`class_id`);--> statement-breakpoint
+CREATE INDEX `class_schedule_class_day_idx` ON `class_schedule` (`class_id`,`weekday`);--> statement-breakpoint
+CREATE INDEX `class_subject_teachers_class_idx` ON `class_subject_teachers` (`class_id`);--> statement-breakpoint
+CREATE INDEX `class_subject_teachers_teacher_idx` ON `class_subject_teachers` (`teacher_id`);--> statement-breakpoint
+CREATE INDEX `class_subject_teachers_subject_id_idx` ON `class_subject_teachers` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `classes_teacher_idx` ON `classes` (`teacher_id`);--> statement-breakpoint
+CREATE INDEX `classes_grade_idx` ON `classes` (`grade`);--> statement-breakpoint
+CREATE INDEX `classes_school_idx` ON `classes` (`school_id`);--> statement-breakpoint
+CREATE INDEX `classes_grade_id_idx` ON `classes` (`grade_id`);--> statement-breakpoint
+CREATE INDEX `classrooms_name_idx` ON `classrooms` (`name`);--> statement-breakpoint
+CREATE INDEX `course_plan_items_plan_idx` ON `course_plan_items` (`plan_id`);--> statement-breakpoint
+CREATE INDEX `course_plan_items_plan_week_idx` ON `course_plan_items` (`plan_id`,`week`);--> statement-breakpoint
+CREATE INDEX `course_plans_class_idx` ON `course_plans` (`class_id`);--> statement-breakpoint
+CREATE INDEX `course_plans_teacher_idx` ON `course_plans` (`teacher_id`);--> statement-breakpoint
+CREATE INDEX `course_plans_subject_idx` ON `course_plans` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `course_plans_status_idx` ON `course_plans` (`status`);--> statement-breakpoint
+CREATE INDEX `course_plans_class_subject_idx` ON `course_plans` (`class_id`,`subject_id`);--> statement-breakpoint
+CREATE INDEX `course_selections_course_idx` ON `course_selections` (`course_id`);--> statement-breakpoint
+CREATE INDEX `course_selections_student_idx` ON `course_selections` (`student_id`);--> statement-breakpoint
+CREATE INDEX `course_selections_status_idx` ON `course_selections` (`selection_status`);--> statement-breakpoint
+CREATE INDEX `data_change_logs_table_name_idx` ON `data_change_logs` (`table_name`);--> statement-breakpoint
+CREATE INDEX `data_change_logs_record_id_idx` ON `data_change_logs` (`record_id`);--> statement-breakpoint
+CREATE INDEX `data_change_logs_action_idx` ON `data_change_logs` (`action`);--> statement-breakpoint
+CREATE INDEX `data_change_logs_changed_by_idx` ON `data_change_logs` (`changed_by`);--> statement-breakpoint
+CREATE INDEX `data_change_logs_created_at_idx` ON `data_change_logs` (`created_at`);--> statement-breakpoint
+CREATE INDEX `departments_name_idx` ON `departments` (`name`);--> statement-breakpoint
+CREATE INDEX `elective_courses_teacher_idx` ON `elective_courses` (`teacher_id`);--> statement-breakpoint
+CREATE INDEX `elective_courses_subject_idx` ON `elective_courses` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `elective_courses_grade_idx` ON `elective_courses` (`grade_id`);--> statement-breakpoint
+CREATE INDEX `elective_courses_status_idx` ON `elective_courses` (`status`);--> statement-breakpoint
+CREATE INDEX `eb_item_student_idx` ON `error_book_items` (`student_id`);--> statement-breakpoint
+CREATE INDEX `eb_item_student_status_idx` ON `error_book_items` (`student_id`,`error_status`);--> statement-breakpoint
+CREATE INDEX `eb_item_student_review_idx` ON `error_book_items` (`student_id`,`next_review_at`);--> statement-breakpoint
+CREATE INDEX `eb_item_question_idx` ON `error_book_items` (`question_id`);--> statement-breakpoint
+CREATE INDEX `eb_item_subject_idx` ON `error_book_items` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `eb_item_source_idx` ON `error_book_items` (`source_type`,`source_id`);--> statement-breakpoint
+CREATE INDEX `eb_review_item_idx` ON `error_book_reviews` (`item_id`);--> statement-breakpoint
+CREATE INDEX `eb_review_student_idx` ON `error_book_reviews` (`student_id`);--> statement-breakpoint
+CREATE INDEX `eb_review_student_reviewed_idx` ON `error_book_reviews` (`student_id`,`reviewed_at`);--> statement-breakpoint
+CREATE INDEX `proctoring_submission_idx` ON `exam_proctoring_events` (`submission_id`);--> statement-breakpoint
+CREATE INDEX `proctoring_student_idx` ON `exam_proctoring_events` (`student_id`);--> statement-breakpoint
+CREATE INDEX `proctoring_exam_idx` ON `exam_proctoring_events` (`exam_id`);--> statement-breakpoint
+CREATE INDEX `proctoring_event_type_idx` ON `exam_proctoring_events` (`event_type`);--> statement-breakpoint
+CREATE INDEX `exam_student_idx` ON `exam_submissions` (`exam_id`,`student_id`);--> statement-breakpoint
+CREATE INDEX `exams_subject_idx` ON `exams` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `exams_grade_idx` ON `exams` (`grade_id`);--> statement-breakpoint
+CREATE INDEX `file_attachments_uploader_idx` ON `file_attachments` (`uploader_id`);--> statement-breakpoint
+CREATE INDEX `file_attachments_target_idx` ON `file_attachments` (`target_type`,`target_id`);--> statement-breakpoint
+CREATE INDEX `file_attachments_created_at_idx` ON `file_attachments` (`created_at`);--> statement-breakpoint
+CREATE INDEX `ga_grade_record_idx` ON `grade_appeals` (`grade_record_id`);--> statement-breakpoint
+CREATE INDEX `ga_student_idx` ON `grade_appeals` (`student_id`);--> statement-breakpoint
+CREATE INDEX `ga_status_idx` ON `grade_appeals` (`appeal_status`);--> statement-breakpoint
+CREATE INDEX `ga_reviewer_idx` ON `grade_appeals` (`reviewer_id`);--> statement-breakpoint
+CREATE INDEX `ga_pending_lookup_idx` ON `grade_appeals` (`grade_record_id`,`appeal_status`);--> statement-breakpoint
+CREATE INDEX `gd_user_updated_idx` ON `grade_drafts` (`user_id`,`updated_at`);--> statement-breakpoint
+CREATE INDEX `gd_class_subject_lock_idx` ON `grade_drafts` (`class_id`,`subject_id`,`type`,`locked_by`);--> statement-breakpoint
+CREATE INDEX `grade_record_answers_record_idx` ON `grade_record_answers` (`grade_record_id`);--> statement-breakpoint
+CREATE INDEX `grade_record_answers_question_idx` ON `grade_record_answers` (`question_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_student_idx` ON `grade_records` (`student_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_class_idx` ON `grade_records` (`class_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_subject_idx` ON `grade_records` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_exam_idx` ON `grade_records` (`exam_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_class_subject_idx` ON `grade_records` (`class_id`,`subject_id`);--> statement-breakpoint
+CREATE INDEX `grade_records_recorded_by_idx` ON `grade_records` (`recorded_by`);--> statement-breakpoint
+CREATE INDEX `grades_school_idx` ON `grades` (`school_id`);--> statement-breakpoint
+CREATE INDEX `grades_school_name_uniq` ON `grades` (`school_id`,`name`);--> statement-breakpoint
+CREATE INDEX `grades_grade_head_idx` ON `grades` (`grade_head_id`);--> statement-breakpoint
+CREATE INDEX `grades_teaching_head_idx` ON `grades` (`teaching_head_id`);--> statement-breakpoint
+CREATE INDEX `hw_answer_submission_idx` ON `homework_answers` (`submission_id`);--> statement-breakpoint
+CREATE INDEX `hw_answer_submission_question_idx` ON `homework_answers` (`submission_id`,`question_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_questions_assignment_idx` ON `homework_assignment_questions` (`assignment_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_targets_assignment_idx` ON `homework_assignment_targets` (`assignment_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_targets_student_idx` ON `homework_assignment_targets` (`student_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_creator_idx` ON `homework_assignments` (`creator_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_source_exam_idx` ON `homework_assignments` (`source_exam_id`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_status_idx` ON `homework_assignments` (`status`);--> statement-breakpoint
+CREATE INDEX `hw_assignment_student_idx` ON `homework_submissions` (`assignment_id`,`student_id`);--> statement-breakpoint
+CREATE INDEX `invitation_codes_code_idx` ON `invitation_codes` (`code`);--> statement-breakpoint
+CREATE INDEX `invitation_codes_email_idx` ON `invitation_codes` (`email`);--> statement-breakpoint
+CREATE INDEX `invitation_codes_used_by_idx` ON `invitation_codes` (`used_by`);--> statement-breakpoint
+CREATE INDEX `mastery_student_idx` ON `knowledge_point_mastery` (`student_id`);--> statement-breakpoint
+CREATE INDEX `mastery_kp_idx` ON `knowledge_point_mastery` (`knowledge_point_id`);--> statement-breakpoint
+CREATE INDEX `kp_prereq_kp_idx` ON `knowledge_point_prerequisites` (`knowledge_point_id`);--> statement-breakpoint
+CREATE INDEX `kp_prereq_prereq_idx` ON `knowledge_point_prerequisites` (`prerequisite_kp_id`);--> statement-breakpoint
+CREATE INDEX `parent_id_idx` ON `knowledge_points` (`parent_id`);--> statement-breakpoint
+CREATE INDEX `kp_chapter_id_idx` ON `knowledge_points` (`chapter_id`);--> statement-breakpoint
+CREATE INDEX `diagnostic_student_idx` ON `learning_diagnostic_reports` (`student_id`);--> statement-breakpoint
+CREATE INDEX `diagnostic_generated_by_idx` ON `learning_diagnostic_reports` (`generated_by`);--> statement-breakpoint
+CREATE INDEX `diagnostic_status_idx` ON `learning_diagnostic_reports` (`report_status`);--> statement-breakpoint
+CREATE INDEX `diagnostic_report_type_idx` ON `learning_diagnostic_reports` (`report_type`);--> statement-breakpoint
+CREATE INDEX `diagnostic_class_idx` ON `learning_diagnostic_reports` (`class_id`);--> statement-breakpoint
+CREATE INDEX `diagnostic_grade_idx` ON `learning_diagnostic_reports` (`grade_id`);--> statement-breakpoint
+CREATE INDEX `leave_requests_student_idx` ON `leave_requests` (`student_id`);--> statement-breakpoint
+CREATE INDEX `leave_requests_requester_idx` ON `leave_requests` (`requester_id`);--> statement-breakpoint
+CREATE INDEX `leave_requests_class_idx` ON `leave_requests` (`class_id`);--> statement-breakpoint
+CREATE INDEX `leave_requests_status_idx` ON `leave_requests` (`leave_status`);--> statement-breakpoint
+CREATE INDEX `leave_requests_reviewer_idx` ON `leave_requests` (`reviewer_id`);--> statement-breakpoint
+CREATE INDEX `leave_requests_class_status_idx` ON `leave_requests` (`class_id`,`leave_status`);--> statement-breakpoint
+CREATE INDEX `leave_requests_student_status_idx` ON `leave_requests` (`student_id`,`leave_status`);--> statement-breakpoint
+CREATE INDEX `lpae_plan_version_idx` ON `lesson_plan_ai_evaluations` (`plan_id`,`version_no`);--> statement-breakpoint
+CREATE INDEX `lpae_plan_idx` ON `lesson_plan_ai_evaluations` (`plan_id`);--> statement-breakpoint
+CREATE INDEX `lpad_date_idx` ON `lesson_plan_analytics_daily` (`snapshot_date`);--> statement-breakpoint
+CREATE INDEX `lpad_subject_grade_idx` ON `lesson_plan_analytics_daily` (`subject_id`,`grade_id`);--> statement-breakpoint
+CREATE INDEX `lpa_plan_idx` ON `lesson_plan_attachments` (`plan_id`);--> statement-breakpoint
+CREATE INDEX `lpa_block_idx` ON `lesson_plan_attachments` (`block_id`);--> statement-breakpoint
+CREATE INDEX `lpa_file_idx` ON `lesson_plan_attachments` (`file_id`);--> statement-breakpoint
+CREATE INDEX `lpc_plan_block_idx` ON `lesson_plan_comments` (`plan_id`,`block_id`);--> statement-breakpoint
+CREATE INDEX `lpc_author_idx` ON `lesson_plan_comments` (`author_id`);--> statement-breakpoint
+CREATE INDEX `lpfi_plan_block_idx` ON `lesson_plan_formative_items` (`plan_id`,`block_id`);--> statement-breakpoint
+CREATE INDEX `lpfr_item_idx` ON `lesson_plan_formative_responses` (`item_id`);--> statement-breakpoint
+CREATE INDEX `lpfr_student_idx` ON `lesson_plan_formative_responses` (`student_id`);--> statement-breakpoint
+CREATE INDEX `lpfr_class_idx` ON `lesson_plan_formative_responses` (`class_id`);--> statement-breakpoint
+CREATE INDEX `lprr_plan_created_idx` ON `lesson_plan_review_records` (`plan_id`,`created_at`);--> statement-breakpoint
+CREATE INDEX `lprr_reviewer_idx` ON `lesson_plan_review_records` (`reviewer_id`);--> statement-breakpoint
+CREATE INDEX `lps_standard_idx` ON `lesson_plan_standards` (`standard_id`);--> statement-breakpoint
+CREATE INDEX `lps_plan_idx` ON `lesson_plan_substitutes` (`plan_id`);--> statement-breakpoint
+CREATE INDEX `lps_original_teacher_idx` ON `lesson_plan_substitutes` (`original_teacher_id`);--> statement-breakpoint
+CREATE INDEX `lps_substitute_teacher_idx` ON `lesson_plan_substitutes` (`substitute_teacher_id`);--> statement-breakpoint
+CREATE INDEX `lps_date_range_idx` ON `lesson_plan_substitutes` (`start_date`,`end_date`);--> statement-breakpoint
+CREATE INDEX `lpt_type_creator_idx` ON `lesson_plan_templates` (`type`,`creator_id`);--> statement-breakpoint
+CREATE INDEX `lpv_plan_version_idx` ON `lesson_plan_versions` (`plan_id`,`version_no`);--> statement-breakpoint
+CREATE INDEX `lpv_plan_created_idx` ON `lesson_plan_versions` (`plan_id`,`created_at`);--> statement-breakpoint
+CREATE INDEX `lp_creator_idx` ON `lesson_plans` (`creator_id`);--> statement-breakpoint
+CREATE INDEX `lp_status_idx` ON `lesson_plans` (`status`);--> statement-breakpoint
+CREATE INDEX `lp_textbook_chapter_idx` ON `lesson_plans` (`textbook_id`,`chapter_id`);--> statement-breakpoint
+CREATE INDEX `lp_subject_grade_idx` ON `lesson_plans` (`subject_id`,`grade_id`);--> statement-breakpoint
+CREATE INDEX `login_logs_user_id_idx` ON `login_logs` (`user_id`);--> statement-breakpoint
+CREATE INDEX `login_logs_user_email_idx` ON `login_logs` (`user_email`);--> statement-breakpoint
+CREATE INDEX `login_logs_action_idx` ON `login_logs` (`action`);--> statement-breakpoint
+CREATE INDEX `login_logs_status_idx` ON `login_logs` (`status`);--> statement-breakpoint
+CREATE INDEX `login_logs_created_at_idx` ON `login_logs` (`created_at`);--> statement-breakpoint
+CREATE INDEX `message_drafts_user_idx` ON `message_drafts` (`user_id`);--> statement-breakpoint
+CREATE INDEX `message_drafts_user_updated_idx` ON `message_drafts` (`user_id`,`updated_at`);--> statement-breakpoint
+CREATE INDEX `message_drafts_user_parent_idx` ON `message_drafts` (`user_id`,`parent_message_id`);--> statement-breakpoint
+CREATE INDEX `message_notifications_user_idx` ON `message_notifications` (`user_id`);--> statement-breakpoint
+CREATE INDEX `message_notifications_is_read_idx` ON `message_notifications` (`is_read`);--> statement-breakpoint
+CREATE INDEX `message_notifications_user_read_idx` ON `message_notifications` (`user_id`,`is_read`);--> statement-breakpoint
+CREATE INDEX `message_notifications_created_at_idx` ON `message_notifications` (`created_at`);--> statement-breakpoint
+CREATE INDEX `message_notifications_priority_idx` ON `message_notifications` (`priority`);--> statement-breakpoint
+CREATE INDEX `message_notifications_user_archived_idx` ON `message_notifications` (`user_id`,`is_archived`);--> statement-breakpoint
+CREATE INDEX `message_reports_reporter_idx` ON `message_reports` (`reporter_id`);--> statement-breakpoint
+CREATE INDEX `message_reports_message_idx` ON `message_reports` (`message_id`);--> statement-breakpoint
+CREATE INDEX `message_reports_reported_user_idx` ON `message_reports` (`reported_user_id`);--> statement-breakpoint
+CREATE INDEX `message_reports_status_idx` ON `message_reports` (`status`);--> statement-breakpoint
+CREATE INDEX `message_templates_user_idx` ON `message_templates` (`user_id`);--> statement-breakpoint
+CREATE INDEX `message_templates_user_sort_idx` ON `message_templates` (`user_id`,`sort_order`);--> statement-breakpoint
+CREATE INDEX `messages_sender_idx` ON `messages` (`sender_id`);--> statement-breakpoint
+CREATE INDEX `messages_receiver_idx` ON `messages` (`receiver_id`);--> statement-breakpoint
+CREATE INDEX `messages_is_read_idx` ON `messages` (`is_read`);--> statement-breakpoint
+CREATE INDEX `messages_parent_idx` ON `messages` (`parent_message_id`);--> statement-breakpoint
+CREATE INDEX `messages_receiver_read_idx` ON `messages` (`receiver_id`,`is_read`);--> statement-breakpoint
+CREATE INDEX `messages_receiver_starred_idx` ON `messages` (`receiver_id`,`is_starred`);--> statement-breakpoint
+CREATE INDEX `messages_group_message_idx` ON `messages` (`group_message_id`);--> statement-breakpoint
+CREATE INDEX `notification_logs_user_idx` ON `notification_logs` (`user_id`);--> statement-breakpoint
+CREATE INDEX `notification_logs_channel_idx` ON `notification_logs` (`channel`);--> statement-breakpoint
+CREATE INDEX `notification_logs_status_idx` ON `notification_logs` (`status`);--> statement-breakpoint
+CREATE INDEX `notification_logs_sent_at_idx` ON `notification_logs` (`sent_at`);--> statement-breakpoint
+CREATE INDEX `notification_preferences_user_idx` ON `notification_preferences` (`user_id`);--> statement-breakpoint
+CREATE INDEX `parent_student_relations_parent_idx` ON `parent_student_relations` (`parent_id`);--> statement-breakpoint
+CREATE INDEX `parent_student_relations_student_idx` ON `parent_student_relations` (`student_id`);--> statement-breakpoint
+CREATE INDEX `password_security_user_idx` ON `password_security` (`user_id`);--> statement-breakpoint
+CREATE INDEX `pa_session_idx` ON `practice_answers` (`session_id`);--> statement-breakpoint
+CREATE INDEX `pa_student_idx` ON `practice_answers` (`student_id`);--> statement-breakpoint
+CREATE INDEX `pa_question_idx` ON `practice_answers` (`question_id`);--> statement-breakpoint
+CREATE INDEX `pa_session_order_idx` ON `practice_answers` (`session_id`,`order_index`);--> statement-breakpoint
+CREATE INDEX `ps_student_idx` ON `practice_sessions` (`student_id`);--> statement-breakpoint
+CREATE INDEX `ps_student_status_idx` ON `practice_sessions` (`student_id`,`practice_status`);--> statement-breakpoint
+CREATE INDEX `ps_subject_idx` ON `practice_sessions` (`subject_id`);--> statement-breakpoint
+CREATE INDEX `parent_id_idx` ON `questions` (`parent_id`);--> statement-breakpoint
+CREATE INDEX `author_id_idx` ON `questions` (`author_id`);--> statement-breakpoint
+CREATE INDEX `kp_idx` ON `questions_to_knowledge_points` (`knowledge_point_id`);--> statement-breakpoint
+CREATE INDEX `role_permissions_role_idx` ON `role_permissions` (`role_id`);--> statement-breakpoint
+CREATE INDEX `schedule_changes_class_idx` ON `schedule_changes` (`class_id`);--> statement-breakpoint
+CREATE INDEX `schedule_changes_status_idx` ON `schedule_changes` (`status`);--> statement-breakpoint
+CREATE INDEX `schedule_changes_requested_by_idx` ON `schedule_changes` (`requested_by`);--> statement-breakpoint
+CREATE INDEX `schedule_changes_original_schedule_idx` ON `schedule_changes` (`original_schedule_id`);--> statement-breakpoint
+CREATE INDEX `scheduling_rules_class_idx` ON `scheduling_rules` (`class_id`);--> statement-breakpoint
+CREATE INDEX `schools_name_idx` ON `schools` (`name`);--> statement-breakpoint
+CREATE INDEX `schools_code_idx` ON `schools` (`code`);--> statement-breakpoint
+CREATE INDEX `session_userId_idx` ON `sessions` (`userId`);--> statement-breakpoint
+CREATE INDEX `std_parent_idx` ON `standards` (`parent_id`);--> statement-breakpoint
+CREATE INDEX `std_subject_grade_idx` ON `standards` (`subject_id`,`grade_id`);--> statement-breakpoint
+CREATE INDEX `std_level_idx` ON `standards` (`level`);--> statement-breakpoint
+CREATE INDEX `subjects_name_idx` ON `subjects` (`name`);--> statement-breakpoint
+CREATE INDEX `submission_idx` ON `submission_answers` (`submission_id`);--> statement-breakpoint
+CREATE INDEX `ss_category_idx` ON `system_settings` (`category`);--> statement-breakpoint
+CREATE INDEX `user_blocks_blocker_idx` ON `user_blocks` (`blocker_id`);--> statement-breakpoint
+CREATE INDEX `email_idx` ON `users` (`email`);--> statement-breakpoint
+CREATE INDEX `users_grade_id_idx` ON `users` (`grade_id`);--> statement-breakpoint
+CREATE INDEX `users_department_id_idx` ON `users` (`department_id`);--> statement-breakpoint
+CREATE INDEX `user_id_idx` ON `users_to_roles` (`user_id`);
\ No newline at end of file
diff --git a/drizzle/0000_perfect_pestilence.sql b/drizzle/0000_perfect_pestilence.sql
deleted file mode 100644
index 7339a20..0000000
--- a/drizzle/0000_perfect_pestilence.sql
+++ /dev/null
@@ -1,816 +0,0 @@
-CREATE TABLE `academic_years` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(100) NOT NULL,
-	`start_date` timestamp NOT NULL,
-	`end_date` timestamp NOT NULL,
-	`is_active` boolean NOT NULL DEFAULT false,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `academic_years_id` PRIMARY KEY(`id`),
-	CONSTRAINT `academic_years_name_unique` UNIQUE(`name`)
-);
---> statement-breakpoint
-CREATE TABLE `accounts` (
-	`userId` varchar(128) NOT NULL,
-	`type` varchar(255) NOT NULL,
-	`provider` varchar(255) NOT NULL,
-	`providerAccountId` varchar(255) NOT NULL,
-	`refresh_token` text,
-	`access_token` text,
-	`expires_at` int,
-	`token_type` varchar(255),
-	`scope` varchar(255),
-	`id_token` text,
-	`session_state` varchar(255),
-	CONSTRAINT `accounts_provider_providerAccountId_pk` PRIMARY KEY(`provider`,`providerAccountId`)
-);
---> statement-breakpoint
-CREATE TABLE `ai_providers` (
-	`id` varchar(128) NOT NULL,
-	`provider` enum('zhipu','openai','gemini','custom') NOT NULL,
-	`base_url` varchar(512),
-	`model` varchar(128) NOT NULL,
-	`api_key_encrypted` text NOT NULL,
-	`api_key_last4` varchar(4),
-	`is_default` boolean NOT NULL DEFAULT false,
-	`created_by` varchar(128),
-	`updated_by` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `ai_providers_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `announcements` (
-	`id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`content` text NOT NULL,
-	`type` enum('school','grade','class') NOT NULL DEFAULT 'school',
-	`status` enum('draft','published','archived') NOT NULL DEFAULT 'draft',
-	`target_grade_id` varchar(128),
-	`target_class_id` varchar(128),
-	`author_id` varchar(128) NOT NULL,
-	`published_at` datetime,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `announcements_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `attendance_records` (
-	`id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`class_id` varchar(128) NOT NULL,
-	`schedule_id` varchar(128),
-	`date` date NOT NULL,
-	`status` enum('present','absent','late','early_leave','excused') NOT NULL,
-	`remark` text,
-	`recorded_by` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `attendance_records_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `attendance_rules` (
-	`id` varchar(128) NOT NULL,
-	`class_id` varchar(128),
-	`late_threshold_minutes` int DEFAULT 15,
-	`early_leave_threshold_minutes` int DEFAULT 15,
-	`enable_auto_mark` boolean DEFAULT false,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `attendance_rules_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `audit_logs` (
-	`id` varchar(128) NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`user_name` varchar(255) NOT NULL,
-	`action` varchar(255) NOT NULL,
-	`module` varchar(128) NOT NULL,
-	`target_id` varchar(128),
-	`target_type` varchar(128),
-	`detail` text,
-	`ip_address` varchar(45),
-	`user_agent` varchar(512),
-	`status` enum('success','failure') NOT NULL DEFAULT 'success',
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `audit_logs_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `chapters` (
-	`id` varchar(128) NOT NULL,
-	`textbook_id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`order` int DEFAULT 0,
-	`parent_id` varchar(128),
-	`content` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `chapters_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `class_enrollments` (
-	`class_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`class_enrollment_status` enum('active','inactive') NOT NULL DEFAULT 'active',
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `class_enrollments_class_id_student_id_pk` PRIMARY KEY(`class_id`,`student_id`)
-);
---> statement-breakpoint
-CREATE TABLE `class_schedule` (
-	`id` varchar(128) NOT NULL,
-	`class_id` varchar(128) NOT NULL,
-	`weekday` int NOT NULL,
-	`start_time` varchar(5) NOT NULL,
-	`end_time` varchar(5) NOT NULL,
-	`course` varchar(255) NOT NULL,
-	`location` varchar(100),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `class_schedule_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `class_subject_teachers` (
-	`class_id` varchar(128) NOT NULL,
-	`subject_id` varchar(128) NOT NULL,
-	`teacher_id` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `class_subject_teachers_class_id_subject_id_pk` PRIMARY KEY(`class_id`,`subject_id`)
-);
---> statement-breakpoint
-CREATE TABLE `classes` (
-	`id` varchar(128) NOT NULL,
-	`school_name` varchar(255),
-	`school_id` varchar(128),
-	`name` varchar(255) NOT NULL,
-	`grade` varchar(50) NOT NULL,
-	`grade_id` varchar(128),
-	`homeroom` varchar(50),
-	`room` varchar(50),
-	`invitation_code` varchar(6),
-	`teacher_id` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `classes_id` PRIMARY KEY(`id`),
-	CONSTRAINT `classes_invitation_code_unique` UNIQUE(`invitation_code`)
-);
---> statement-breakpoint
-CREATE TABLE `classrooms` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255) NOT NULL,
-	`building` varchar(100),
-	`floor` int,
-	`capacity` int,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `classrooms_id` PRIMARY KEY(`id`),
-	CONSTRAINT `classrooms_name_unique` UNIQUE(`name`)
-);
---> statement-breakpoint
-CREATE TABLE `course_plan_items` (
-	`id` varchar(128) NOT NULL,
-	`plan_id` varchar(128) NOT NULL,
-	`week` int NOT NULL,
-	`topic` varchar(255) NOT NULL,
-	`content` text,
-	`hours` int NOT NULL DEFAULT 2,
-	`textbook_chapter` varchar(255),
-	`notes` text,
-	`is_completed` boolean NOT NULL DEFAULT false,
-	`completed_at` date,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `course_plan_items_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `course_plans` (
-	`id` varchar(128) NOT NULL,
-	`class_id` varchar(128) NOT NULL,
-	`subject_id` varchar(128) NOT NULL,
-	`teacher_id` varchar(128) NOT NULL,
-	`academic_year_id` varchar(128),
-	`semester` enum('1','2') NOT NULL DEFAULT '1',
-	`total_hours` int NOT NULL DEFAULT 0,
-	`completed_hours` int NOT NULL DEFAULT 0,
-	`weekly_hours` int NOT NULL DEFAULT 0,
-	`start_date` date,
-	`end_date` date,
-	`syllabus` text,
-	`objectives` text,
-	`status` enum('planning','active','completed','paused') NOT NULL DEFAULT 'planning',
-	`created_by` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `course_plans_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `data_change_logs` (
-	`id` varchar(128) NOT NULL,
-	`table_name` varchar(128) NOT NULL,
-	`record_id` varchar(128) NOT NULL,
-	`action` enum('create','update','delete') NOT NULL,
-	`old_value` text,
-	`new_value` text,
-	`changed_by` varchar(128) NOT NULL,
-	`changed_by_name` varchar(255) NOT NULL,
-	`ip_address` varchar(45),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `data_change_logs_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `departments` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255) NOT NULL,
-	`description` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `departments_id` PRIMARY KEY(`id`),
-	CONSTRAINT `departments_name_unique` UNIQUE(`name`)
-);
---> statement-breakpoint
-CREATE TABLE `exam_questions` (
-	`exam_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`score` int DEFAULT 0,
-	`order` int DEFAULT 0,
-	CONSTRAINT `exam_questions_exam_id_question_id_pk` PRIMARY KEY(`exam_id`,`question_id`)
-);
---> statement-breakpoint
-CREATE TABLE `exam_submissions` (
-	`id` varchar(128) NOT NULL,
-	`exam_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`score` int,
-	`status` varchar(50) DEFAULT 'started',
-	`submitted_at` timestamp,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `exam_submissions_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `exams` (
-	`id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`description` text,
-	`structure` json,
-	`creator_id` varchar(128) NOT NULL,
-	`subject_id` varchar(128),
-	`grade_id` varchar(128),
-	`start_time` timestamp,
-	`end_time` timestamp,
-	`status` varchar(50) DEFAULT 'draft',
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `exams_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `file_attachments` (
-	`id` varchar(128) NOT NULL,
-	`filename` varchar(255) NOT NULL,
-	`original_name` varchar(255) NOT NULL,
-	`mime_type` varchar(128) NOT NULL,
-	`size` bigint NOT NULL,
-	`storage_path` varchar(512) NOT NULL,
-	`url` varchar(512),
-	`uploader_id` varchar(128) NOT NULL,
-	`target_type` varchar(128),
-	`target_id` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `file_attachments_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `grade_records` (
-	`id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`class_id` varchar(128) NOT NULL,
-	`subject_id` varchar(128) NOT NULL,
-	`exam_id` varchar(128),
-	`academic_year_id` varchar(128),
-	`title` varchar(255) NOT NULL,
-	`score` decimal(6,2) NOT NULL,
-	`full_score` decimal(6,2) NOT NULL DEFAULT '100',
-	`type` enum('exam','quiz','homework','other') NOT NULL DEFAULT 'exam',
-	`semester` enum('1','2') NOT NULL DEFAULT '1',
-	`recorded_by` varchar(128) NOT NULL,
-	`remark` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `grade_records_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `grades` (
-	`id` varchar(128) NOT NULL,
-	`school_id` varchar(128) NOT NULL,
-	`name` varchar(100) NOT NULL,
-	`order` int NOT NULL DEFAULT 0,
-	`grade_head_id` varchar(128),
-	`teaching_head_id` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `grades_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `homework_answers` (
-	`id` varchar(128) NOT NULL,
-	`submission_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`answer_content` json,
-	`score` int,
-	`feedback` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `homework_answers_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `homework_assignment_questions` (
-	`assignment_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`score` int DEFAULT 0,
-	`order` int DEFAULT 0,
-	CONSTRAINT `homework_assignment_questions_assignment_id_question_id_pk` PRIMARY KEY(`assignment_id`,`question_id`)
-);
---> statement-breakpoint
-CREATE TABLE `homework_assignment_targets` (
-	`assignment_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `homework_assignment_targets_assignment_id_student_id_pk` PRIMARY KEY(`assignment_id`,`student_id`)
-);
---> statement-breakpoint
-CREATE TABLE `homework_assignments` (
-	`id` varchar(128) NOT NULL,
-	`source_exam_id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`description` text,
-	`structure` json,
-	`status` varchar(50) DEFAULT 'draft',
-	`creator_id` varchar(128) NOT NULL,
-	`available_at` timestamp,
-	`due_at` timestamp,
-	`allow_late` boolean NOT NULL DEFAULT false,
-	`late_due_at` timestamp,
-	`max_attempts` int NOT NULL DEFAULT 1,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `homework_assignments_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `homework_submissions` (
-	`id` varchar(128) NOT NULL,
-	`assignment_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`attempt_no` int NOT NULL DEFAULT 1,
-	`score` int,
-	`status` varchar(50) DEFAULT 'started',
-	`started_at` timestamp NOT NULL DEFAULT (now()),
-	`submitted_at` timestamp,
-	`is_late` boolean NOT NULL DEFAULT false,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `homework_submissions_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `knowledge_points` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255) NOT NULL,
-	`description` text,
-	`anchor_text` varchar(255),
-	`parent_id` varchar(128),
-	`chapter_id` varchar(128),
-	`level` int DEFAULT 0,
-	`order` int DEFAULT 0,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `knowledge_points_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `login_logs` (
-	`id` varchar(128) NOT NULL,
-	`user_id` varchar(128),
-	`user_email` varchar(255) NOT NULL,
-	`action` enum('signin','signout','signup') NOT NULL,
-	`status` enum('success','failure') NOT NULL DEFAULT 'success',
-	`ip_address` varchar(45),
-	`user_agent` varchar(512),
-	`error_message` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `login_logs_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `message_notifications` (
-	`id` varchar(128) NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`type` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`content` text,
-	`link` varchar(512),
-	`is_read` boolean NOT NULL DEFAULT false,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `message_notifications_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `messages` (
-	`id` varchar(128) NOT NULL,
-	`sender_id` varchar(128) NOT NULL,
-	`receiver_id` varchar(128) NOT NULL,
-	`subject` varchar(255),
-	`content` text NOT NULL,
-	`is_read` boolean NOT NULL DEFAULT false,
-	`read_at` timestamp,
-	`parent_message_id` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `messages_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `notification_preferences` (
-	`id` varchar(128) NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`email_enabled` boolean NOT NULL DEFAULT false,
-	`sms_enabled` boolean NOT NULL DEFAULT false,
-	`push_enabled` boolean NOT NULL DEFAULT true,
-	`homework_notifications` boolean NOT NULL DEFAULT true,
-	`grade_notifications` boolean NOT NULL DEFAULT true,
-	`announcement_notifications` boolean NOT NULL DEFAULT true,
-	`message_notifications` boolean NOT NULL DEFAULT true,
-	`attendance_notifications` boolean NOT NULL DEFAULT true,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `notification_preferences_id` PRIMARY KEY(`id`),
-	CONSTRAINT `notification_preferences_user_id_unique` UNIQUE(`user_id`)
-);
---> statement-breakpoint
-CREATE TABLE `parent_student_relations` (
-	`id` varchar(128) NOT NULL,
-	`parent_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`relation` varchar(50),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `parent_student_relations_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `password_security` (
-	`id` varchar(128) NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`failed_login_attempts` int NOT NULL DEFAULT 0,
-	`locked_until` timestamp,
-	`password_changed_at` timestamp NOT NULL DEFAULT (now()),
-	`must_change_password` boolean NOT NULL DEFAULT false,
-	`last_password_change` timestamp,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `password_security_id` PRIMARY KEY(`id`),
-	CONSTRAINT `password_security_user_id_unique` UNIQUE(`user_id`)
-);
---> statement-breakpoint
-CREATE TABLE `questions` (
-	`id` varchar(128) NOT NULL,
-	`content` json NOT NULL,
-	`type` enum('single_choice','multiple_choice','text','judgment','composite') NOT NULL,
-	`difficulty` int DEFAULT 1,
-	`parent_id` varchar(128),
-	`author_id` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `questions_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `questions_to_knowledge_points` (
-	`question_id` varchar(128) NOT NULL,
-	`knowledge_point_id` varchar(128) NOT NULL,
-	CONSTRAINT `questions_to_knowledge_points_question_id_knowledge_point_id_pk` PRIMARY KEY(`question_id`,`knowledge_point_id`)
-);
---> statement-breakpoint
-CREATE TABLE `role_permissions` (
-	`role_id` varchar(128) NOT NULL,
-	`permission` varchar(100) NOT NULL,
-	CONSTRAINT `role_permissions_role_id_permission_pk` PRIMARY KEY(`role_id`,`permission`)
-);
---> statement-breakpoint
-CREATE TABLE `roles` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(50) NOT NULL,
-	`description` varchar(255),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `roles_id` PRIMARY KEY(`id`),
-	CONSTRAINT `roles_name_unique` UNIQUE(`name`)
-);
---> statement-breakpoint
-CREATE TABLE `schedule_changes` (
-	`id` varchar(128) NOT NULL,
-	`original_schedule_id` varchar(128),
-	`class_id` varchar(128) NOT NULL,
-	`original_teacher_id` varchar(128),
-	`substitute_teacher_id` varchar(128),
-	`original_date` date,
-	`new_date` date,
-	`new_start_time` varchar(10),
-	`new_end_time` varchar(10),
-	`reason` text,
-	`status` enum('pending','approved','rejected','completed') NOT NULL DEFAULT 'pending',
-	`requested_by` varchar(128) NOT NULL,
-	`approved_by` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `schedule_changes_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `scheduling_rules` (
-	`id` varchar(128) NOT NULL,
-	`class_id` varchar(128),
-	`max_daily_hours` int DEFAULT 8,
-	`max_continuous_hours` int DEFAULT 2,
-	`lunch_break_start` varchar(10) DEFAULT '12:00',
-	`lunch_break_end` varchar(10) DEFAULT '13:00',
-	`morning_start` varchar(10) DEFAULT '08:00',
-	`afternoon_end` varchar(10) DEFAULT '17:00',
-	`avoid_back_to_back` boolean DEFAULT false,
-	`balanced_subjects` boolean DEFAULT true,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `scheduling_rules_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `schools` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255) NOT NULL,
-	`code` varchar(50),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `schools_id` PRIMARY KEY(`id`),
-	CONSTRAINT `schools_name_unique` UNIQUE(`name`),
-	CONSTRAINT `schools_code_unique` UNIQUE(`code`)
-);
---> statement-breakpoint
-CREATE TABLE `sessions` (
-	`sessionToken` varchar(255) NOT NULL,
-	`userId` varchar(128) NOT NULL,
-	`expires` timestamp NOT NULL,
-	CONSTRAINT `sessions_sessionToken` PRIMARY KEY(`sessionToken`)
-);
---> statement-breakpoint
-CREATE TABLE `subjects` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(100) NOT NULL,
-	`code` varchar(50),
-	`order` int DEFAULT 0,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `subjects_id` PRIMARY KEY(`id`),
-	CONSTRAINT `subjects_name_unique` UNIQUE(`name`),
-	CONSTRAINT `subjects_code_unique` UNIQUE(`code`)
-);
---> statement-breakpoint
-CREATE TABLE `submission_answers` (
-	`id` varchar(128) NOT NULL,
-	`submission_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`answer_content` json,
-	`score` int,
-	`feedback` text,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `submission_answers_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `textbooks` (
-	`id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`subject` varchar(100) NOT NULL,
-	`grade` varchar(50),
-	`publisher` varchar(100),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `textbooks_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `users` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255),
-	`email` varchar(255) NOT NULL,
-	`emailVerified` timestamp,
-	`image` varchar(255),
-	`password` varchar(255),
-	`phone` varchar(30),
-	`address` varchar(255),
-	`gender` varchar(20),
-	`age` int,
-	`grade_id` varchar(128),
-	`department_id` varchar(128),
-	`onboarded_at` timestamp,
-	`birth_date` date,
-	`guardian_name` varchar(255),
-	`guardian_phone` varchar(20),
-	`guardian_relation` varchar(50),
-	`consent_accepted_at` datetime,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `users_id` PRIMARY KEY(`id`),
-	CONSTRAINT `users_email_unique` UNIQUE(`email`)
-);
---> statement-breakpoint
-CREATE TABLE `users_to_roles` (
-	`user_id` varchar(128) NOT NULL,
-	`role_id` varchar(128) NOT NULL,
-	CONSTRAINT `users_to_roles_user_id_role_id_pk` PRIMARY KEY(`user_id`,`role_id`)
-);
---> statement-breakpoint
-CREATE TABLE `verificationTokens` (
-	`identifier` varchar(255) NOT NULL,
-	`token` varchar(255) NOT NULL,
-	`expires` timestamp NOT NULL,
-	CONSTRAINT `verificationTokens_identifier_token_pk` PRIMARY KEY(`identifier`,`token`)
-);
---> statement-breakpoint
-ALTER TABLE `accounts` ADD CONSTRAINT `accounts_userId_users_id_fk` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `announcements` ADD CONSTRAINT `announcements_author_id_users_id_fk` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `attendance_records_recorded_by_users_id_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_records` ADD CONSTRAINT `ar_rb_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_rules` ADD CONSTRAINT `attendance_rules_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `attendance_rules` ADD CONSTRAINT `atr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `chapters` ADD CONSTRAINT `chapters_textbook_id_textbooks_id_fk` FOREIGN KEY (`textbook_id`) REFERENCES `textbooks`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_enrollments` ADD CONSTRAINT `ce_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_enrollments` ADD CONSTRAINT `ce_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_schedule` ADD CONSTRAINT `cs_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `class_subject_teachers_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `cst_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_subject_teachers` ADD CONSTRAINT `cst_s_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `classes` ADD CONSTRAINT `classes_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `classes` ADD CONSTRAINT `c_s_fk` FOREIGN KEY (`school_id`) REFERENCES `schools`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `classes` ADD CONSTRAINT `c_g_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plan_items` ADD CONSTRAINT `course_plan_items_plan_id_course_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `course_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plan_items` ADD CONSTRAINT `cpi_p_fk` FOREIGN KEY (`plan_id`) REFERENCES `course_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `course_plans_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `cp_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `cp_s_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `cp_t_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_plans` ADD CONSTRAINT `cp_cb_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_questions` ADD CONSTRAINT `exam_questions_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_questions` ADD CONSTRAINT `exam_questions_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_submissions` ADD CONSTRAINT `exam_submissions_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_submissions` ADD CONSTRAINT `exam_submissions_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exams` ADD CONSTRAINT `exams_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exams` ADD CONSTRAINT `exams_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exams` ADD CONSTRAINT `exams_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `file_attachments` ADD CONSTRAINT `file_attachments_uploader_id_users_id_fk` FOREIGN KEY (`uploader_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `grade_records_recorded_by_users_id_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `gr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `gr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `gr_sub_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grade_records` ADD CONSTRAINT `gr_rb_fk` FOREIGN KEY (`recorded_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grades` ADD CONSTRAINT `g_s_fk` FOREIGN KEY (`school_id`) REFERENCES `schools`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grades` ADD CONSTRAINT `g_gh_fk` FOREIGN KEY (`grade_head_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `grades` ADD CONSTRAINT `g_th_fk` FOREIGN KEY (`teaching_head_id`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_answers` ADD CONSTRAINT `hw_ans_sub_fk` FOREIGN KEY (`submission_id`) REFERENCES `homework_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_answers` ADD CONSTRAINT `hw_ans_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignment_questions` ADD CONSTRAINT `hw_aq_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignment_questions` ADD CONSTRAINT `hw_aq_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignment_targets` ADD CONSTRAINT `hw_at_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignment_targets` ADD CONSTRAINT `hw_at_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignments` ADD CONSTRAINT `hw_asg_exam_fk` FOREIGN KEY (`source_exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_assignments` ADD CONSTRAINT `hw_asg_creator_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_submissions` ADD CONSTRAINT `hw_sub_a_fk` FOREIGN KEY (`assignment_id`) REFERENCES `homework_assignments`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `homework_submissions` ADD CONSTRAINT `hw_sub_student_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `message_notifications` ADD CONSTRAINT `message_notifications_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `messages` ADD CONSTRAINT `messages_sender_id_users_id_fk` FOREIGN KEY (`sender_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `messages` ADD CONSTRAINT `messages_receiver_id_users_id_fk` FOREIGN KEY (`receiver_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `notification_preferences` ADD CONSTRAINT `notification_preferences_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `notification_preferences` ADD CONSTRAINT `np_u_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `parent_student_relations` ADD CONSTRAINT `parent_student_relations_parent_id_users_id_fk` FOREIGN KEY (`parent_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `parent_student_relations` ADD CONSTRAINT `parent_student_relations_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `parent_student_relations` ADD CONSTRAINT `psr_p_fk` FOREIGN KEY (`parent_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `parent_student_relations` ADD CONSTRAINT `psr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `password_security` ADD CONSTRAINT `password_security_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `password_security` ADD CONSTRAINT `ps_u_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `questions` ADD CONSTRAINT `questions_author_id_users_id_fk` FOREIGN KEY (`author_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `questions_to_knowledge_points` ADD CONSTRAINT `q_kp_qid_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `questions_to_knowledge_points` ADD CONSTRAINT `q_kp_kpid_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `role_permissions` ADD CONSTRAINT `role_permissions_role_id_roles_id_fk` FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `sessions` ADD CONSTRAINT `sessions_userId_users_id_fk` FOREIGN KEY (`userId`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `submission_answers` ADD CONSTRAINT `submission_answers_submission_id_exam_submissions_id_fk` FOREIGN KEY (`submission_id`) REFERENCES `exam_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `submission_answers` ADD CONSTRAINT `submission_answers_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `users_to_roles` ADD CONSTRAINT `users_to_roles_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `users_to_roles` ADD CONSTRAINT `users_to_roles_role_id_roles_id_fk` FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `academic_years_name_idx` ON `academic_years` (`name`);--> statement-breakpoint
-CREATE INDEX `academic_years_active_idx` ON `academic_years` (`is_active`);--> statement-breakpoint
-CREATE INDEX `account_userId_idx` ON `accounts` (`userId`);--> statement-breakpoint
-CREATE INDEX `ai_provider_idx` ON `ai_providers` (`provider`);--> statement-breakpoint
-CREATE INDEX `ai_provider_default_idx` ON `ai_providers` (`is_default`);--> statement-breakpoint
-CREATE INDEX `announcements_author_idx` ON `announcements` (`author_id`);--> statement-breakpoint
-CREATE INDEX `announcements_status_idx` ON `announcements` (`status`);--> statement-breakpoint
-CREATE INDEX `announcements_type_idx` ON `announcements` (`type`);--> statement-breakpoint
-CREATE INDEX `announcements_target_grade_idx` ON `announcements` (`target_grade_id`);--> statement-breakpoint
-CREATE INDEX `announcements_target_class_idx` ON `announcements` (`target_class_id`);--> statement-breakpoint
-CREATE INDEX `attendance_records_student_idx` ON `attendance_records` (`student_id`);--> statement-breakpoint
-CREATE INDEX `attendance_records_class_idx` ON `attendance_records` (`class_id`);--> statement-breakpoint
-CREATE INDEX `attendance_records_date_idx` ON `attendance_records` (`date`);--> statement-breakpoint
-CREATE INDEX `attendance_records_class_date_idx` ON `attendance_records` (`class_id`,`date`);--> statement-breakpoint
-CREATE INDEX `attendance_records_student_date_idx` ON `attendance_records` (`student_id`,`date`);--> statement-breakpoint
-CREATE INDEX `attendance_records_schedule_idx` ON `attendance_records` (`schedule_id`);--> statement-breakpoint
-CREATE INDEX `attendance_records_recorded_by_idx` ON `attendance_records` (`recorded_by`);--> statement-breakpoint
-CREATE INDEX `attendance_rules_class_idx` ON `attendance_rules` (`class_id`);--> statement-breakpoint
-CREATE INDEX `audit_logs_user_id_idx` ON `audit_logs` (`user_id`);--> statement-breakpoint
-CREATE INDEX `audit_logs_module_idx` ON `audit_logs` (`module`);--> statement-breakpoint
-CREATE INDEX `audit_logs_action_idx` ON `audit_logs` (`action`);--> statement-breakpoint
-CREATE INDEX `audit_logs_status_idx` ON `audit_logs` (`status`);--> statement-breakpoint
-CREATE INDEX `audit_logs_created_at_idx` ON `audit_logs` (`created_at`);--> statement-breakpoint
-CREATE INDEX `textbook_idx` ON `chapters` (`textbook_id`);--> statement-breakpoint
-CREATE INDEX `parent_id_idx` ON `chapters` (`parent_id`);--> statement-breakpoint
-CREATE INDEX `class_enrollments_class_idx` ON `class_enrollments` (`class_id`);--> statement-breakpoint
-CREATE INDEX `class_enrollments_student_idx` ON `class_enrollments` (`student_id`);--> statement-breakpoint
-CREATE INDEX `class_schedule_class_idx` ON `class_schedule` (`class_id`);--> statement-breakpoint
-CREATE INDEX `class_schedule_class_day_idx` ON `class_schedule` (`class_id`,`weekday`);--> statement-breakpoint
-CREATE INDEX `class_subject_teachers_class_idx` ON `class_subject_teachers` (`class_id`);--> statement-breakpoint
-CREATE INDEX `class_subject_teachers_teacher_idx` ON `class_subject_teachers` (`teacher_id`);--> statement-breakpoint
-CREATE INDEX `class_subject_teachers_subject_id_idx` ON `class_subject_teachers` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `classes_teacher_idx` ON `classes` (`teacher_id`);--> statement-breakpoint
-CREATE INDEX `classes_grade_idx` ON `classes` (`grade`);--> statement-breakpoint
-CREATE INDEX `classes_school_idx` ON `classes` (`school_id`);--> statement-breakpoint
-CREATE INDEX `classes_grade_id_idx` ON `classes` (`grade_id`);--> statement-breakpoint
-CREATE INDEX `classrooms_name_idx` ON `classrooms` (`name`);--> statement-breakpoint
-CREATE INDEX `course_plan_items_plan_idx` ON `course_plan_items` (`plan_id`);--> statement-breakpoint
-CREATE INDEX `course_plan_items_plan_week_idx` ON `course_plan_items` (`plan_id`,`week`);--> statement-breakpoint
-CREATE INDEX `course_plans_class_idx` ON `course_plans` (`class_id`);--> statement-breakpoint
-CREATE INDEX `course_plans_teacher_idx` ON `course_plans` (`teacher_id`);--> statement-breakpoint
-CREATE INDEX `course_plans_subject_idx` ON `course_plans` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `course_plans_status_idx` ON `course_plans` (`status`);--> statement-breakpoint
-CREATE INDEX `course_plans_class_subject_idx` ON `course_plans` (`class_id`,`subject_id`);--> statement-breakpoint
-CREATE INDEX `data_change_logs_table_name_idx` ON `data_change_logs` (`table_name`);--> statement-breakpoint
-CREATE INDEX `data_change_logs_record_id_idx` ON `data_change_logs` (`record_id`);--> statement-breakpoint
-CREATE INDEX `data_change_logs_action_idx` ON `data_change_logs` (`action`);--> statement-breakpoint
-CREATE INDEX `data_change_logs_changed_by_idx` ON `data_change_logs` (`changed_by`);--> statement-breakpoint
-CREATE INDEX `data_change_logs_created_at_idx` ON `data_change_logs` (`created_at`);--> statement-breakpoint
-CREATE INDEX `departments_name_idx` ON `departments` (`name`);--> statement-breakpoint
-CREATE INDEX `exam_student_idx` ON `exam_submissions` (`exam_id`,`student_id`);--> statement-breakpoint
-CREATE INDEX `exams_subject_idx` ON `exams` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `exams_grade_idx` ON `exams` (`grade_id`);--> statement-breakpoint
-CREATE INDEX `file_attachments_uploader_idx` ON `file_attachments` (`uploader_id`);--> statement-breakpoint
-CREATE INDEX `file_attachments_target_idx` ON `file_attachments` (`target_type`,`target_id`);--> statement-breakpoint
-CREATE INDEX `file_attachments_created_at_idx` ON `file_attachments` (`created_at`);--> statement-breakpoint
-CREATE INDEX `grade_records_student_idx` ON `grade_records` (`student_id`);--> statement-breakpoint
-CREATE INDEX `grade_records_class_idx` ON `grade_records` (`class_id`);--> statement-breakpoint
-CREATE INDEX `grade_records_subject_idx` ON `grade_records` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `grade_records_exam_idx` ON `grade_records` (`exam_id`);--> statement-breakpoint
-CREATE INDEX `grade_records_class_subject_idx` ON `grade_records` (`class_id`,`subject_id`);--> statement-breakpoint
-CREATE INDEX `grade_records_recorded_by_idx` ON `grade_records` (`recorded_by`);--> statement-breakpoint
-CREATE INDEX `grades_school_idx` ON `grades` (`school_id`);--> statement-breakpoint
-CREATE INDEX `grades_school_name_uniq` ON `grades` (`school_id`,`name`);--> statement-breakpoint
-CREATE INDEX `grades_grade_head_idx` ON `grades` (`grade_head_id`);--> statement-breakpoint
-CREATE INDEX `grades_teaching_head_idx` ON `grades` (`teaching_head_id`);--> statement-breakpoint
-CREATE INDEX `hw_answer_submission_idx` ON `homework_answers` (`submission_id`);--> statement-breakpoint
-CREATE INDEX `hw_answer_submission_question_idx` ON `homework_answers` (`submission_id`,`question_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_questions_assignment_idx` ON `homework_assignment_questions` (`assignment_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_targets_assignment_idx` ON `homework_assignment_targets` (`assignment_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_targets_student_idx` ON `homework_assignment_targets` (`student_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_creator_idx` ON `homework_assignments` (`creator_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_source_exam_idx` ON `homework_assignments` (`source_exam_id`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_status_idx` ON `homework_assignments` (`status`);--> statement-breakpoint
-CREATE INDEX `hw_assignment_student_idx` ON `homework_submissions` (`assignment_id`,`student_id`);--> statement-breakpoint
-CREATE INDEX `parent_id_idx` ON `knowledge_points` (`parent_id`);--> statement-breakpoint
-CREATE INDEX `kp_chapter_id_idx` ON `knowledge_points` (`chapter_id`);--> statement-breakpoint
-CREATE INDEX `login_logs_user_id_idx` ON `login_logs` (`user_id`);--> statement-breakpoint
-CREATE INDEX `login_logs_user_email_idx` ON `login_logs` (`user_email`);--> statement-breakpoint
-CREATE INDEX `login_logs_action_idx` ON `login_logs` (`action`);--> statement-breakpoint
-CREATE INDEX `login_logs_status_idx` ON `login_logs` (`status`);--> statement-breakpoint
-CREATE INDEX `login_logs_created_at_idx` ON `login_logs` (`created_at`);--> statement-breakpoint
-CREATE INDEX `message_notifications_user_idx` ON `message_notifications` (`user_id`);--> statement-breakpoint
-CREATE INDEX `message_notifications_is_read_idx` ON `message_notifications` (`is_read`);--> statement-breakpoint
-CREATE INDEX `message_notifications_user_read_idx` ON `message_notifications` (`user_id`,`is_read`);--> statement-breakpoint
-CREATE INDEX `message_notifications_created_at_idx` ON `message_notifications` (`created_at`);--> statement-breakpoint
-CREATE INDEX `messages_sender_idx` ON `messages` (`sender_id`);--> statement-breakpoint
-CREATE INDEX `messages_receiver_idx` ON `messages` (`receiver_id`);--> statement-breakpoint
-CREATE INDEX `messages_is_read_idx` ON `messages` (`is_read`);--> statement-breakpoint
-CREATE INDEX `messages_parent_idx` ON `messages` (`parent_message_id`);--> statement-breakpoint
-CREATE INDEX `messages_receiver_read_idx` ON `messages` (`receiver_id`,`is_read`);--> statement-breakpoint
-CREATE INDEX `notification_preferences_user_idx` ON `notification_preferences` (`user_id`);--> statement-breakpoint
-CREATE INDEX `parent_student_relations_parent_idx` ON `parent_student_relations` (`parent_id`);--> statement-breakpoint
-CREATE INDEX `parent_student_relations_student_idx` ON `parent_student_relations` (`student_id`);--> statement-breakpoint
-CREATE INDEX `password_security_user_idx` ON `password_security` (`user_id`);--> statement-breakpoint
-CREATE INDEX `parent_id_idx` ON `questions` (`parent_id`);--> statement-breakpoint
-CREATE INDEX `author_id_idx` ON `questions` (`author_id`);--> statement-breakpoint
-CREATE INDEX `kp_idx` ON `questions_to_knowledge_points` (`knowledge_point_id`);--> statement-breakpoint
-CREATE INDEX `role_permissions_role_idx` ON `role_permissions` (`role_id`);--> statement-breakpoint
-CREATE INDEX `schedule_changes_class_idx` ON `schedule_changes` (`class_id`);--> statement-breakpoint
-CREATE INDEX `schedule_changes_status_idx` ON `schedule_changes` (`status`);--> statement-breakpoint
-CREATE INDEX `schedule_changes_requested_by_idx` ON `schedule_changes` (`requested_by`);--> statement-breakpoint
-CREATE INDEX `schedule_changes_original_schedule_idx` ON `schedule_changes` (`original_schedule_id`);--> statement-breakpoint
-CREATE INDEX `scheduling_rules_class_idx` ON `scheduling_rules` (`class_id`);--> statement-breakpoint
-CREATE INDEX `schools_name_idx` ON `schools` (`name`);--> statement-breakpoint
-CREATE INDEX `schools_code_idx` ON `schools` (`code`);--> statement-breakpoint
-CREATE INDEX `session_userId_idx` ON `sessions` (`userId`);--> statement-breakpoint
-CREATE INDEX `subjects_name_idx` ON `subjects` (`name`);--> statement-breakpoint
-CREATE INDEX `submission_idx` ON `submission_answers` (`submission_id`);--> statement-breakpoint
-CREATE INDEX `email_idx` ON `users` (`email`);--> statement-breakpoint
-CREATE INDEX `users_grade_id_idx` ON `users` (`grade_id`);--> statement-breakpoint
-CREATE INDEX `users_department_id_idx` ON `users` (`department_id`);--> statement-breakpoint
-CREATE INDEX `user_id_idx` ON `users_to_roles` (`user_id`);
\ No newline at end of file
diff --git a/drizzle/0001_heavy_sage.sql b/drizzle/0001_heavy_sage.sql
deleted file mode 100644
index 0af3690..0000000
--- a/drizzle/0001_heavy_sage.sql
+++ /dev/null
@@ -1,115 +0,0 @@
-CREATE TABLE `course_selections` (
-	`id` varchar(128) NOT NULL,
-	`course_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`selection_status` enum('selected','enrolled','waitlist','dropped','rejected') NOT NULL DEFAULT 'selected',
-	`priority` int DEFAULT 1,
-	`selected_at` timestamp NOT NULL DEFAULT (now()),
-	`enrolled_at` timestamp,
-	`dropped_at` timestamp,
-	`lottery_rank` int,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `course_selections_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `elective_courses` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(255) NOT NULL,
-	`subject_id` varchar(128),
-	`teacher_id` varchar(128) NOT NULL,
-	`grade_id` varchar(128),
-	`description` text,
-	`capacity` int NOT NULL DEFAULT 30,
-	`enrolled_count` int NOT NULL DEFAULT 0,
-	`classroom` varchar(100),
-	`schedule` varchar(255),
-	`start_date` date,
-	`end_date` date,
-	`selection_start_at` datetime,
-	`selection_end_at` datetime,
-	`status` enum('draft','open','closed','cancelled') NOT NULL DEFAULT 'draft',
-	`selection_mode` enum('fcfs','lottery') NOT NULL DEFAULT 'fcfs',
-	`credit` decimal(3,1) DEFAULT '1.0',
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `elective_courses_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `exam_proctoring_events` (
-	`id` varchar(128) NOT NULL,
-	`submission_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`exam_id` varchar(128) NOT NULL,
-	`event_type` enum('tab_switch','window_blur','copy_attempt','paste_attempt','right_click','devtools_open','fullscreen_exit','idle_timeout') NOT NULL,
-	`event_detail` text,
-	`occurred_at` timestamp NOT NULL DEFAULT (now()),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `exam_proctoring_events_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `knowledge_point_mastery` (
-	`id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`knowledge_point_id` varchar(128) NOT NULL,
-	`mastery_level` decimal(5,2) NOT NULL DEFAULT '0',
-	`total_questions` int NOT NULL DEFAULT 0,
-	`correct_questions` int NOT NULL DEFAULT 0,
-	`last_assessed_at` timestamp NOT NULL DEFAULT (now()),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `knowledge_point_mastery_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `learning_diagnostic_reports` (
-	`id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`generated_by` varchar(128),
-	`report_type` enum('individual','class','grade') NOT NULL DEFAULT 'individual',
-	`period` varchar(50),
-	`summary` text,
-	`strengths` json,
-	`weaknesses` json,
-	`recommendations` json,
-	`overall_score` decimal(5,2),
-	`report_status` enum('draft','published','archived') NOT NULL DEFAULT 'draft',
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `learning_diagnostic_reports_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-ALTER TABLE `exams` ADD `exam_mode` enum('homework','timed','proctored') DEFAULT 'homework';--> statement-breakpoint
-ALTER TABLE `exams` ADD `duration_minutes` int;--> statement-breakpoint
-ALTER TABLE `exams` ADD `shuffle_questions` boolean DEFAULT false;--> statement-breakpoint
-ALTER TABLE `exams` ADD `allow_late_start` boolean DEFAULT false;--> statement-breakpoint
-ALTER TABLE `exams` ADD `late_start_grace_minutes` int DEFAULT 0;--> statement-breakpoint
-ALTER TABLE `exams` ADD `anti_cheat_enabled` boolean DEFAULT false;--> statement-breakpoint
-ALTER TABLE `course_selections` ADD CONSTRAINT `course_selections_course_id_elective_courses_id_fk` FOREIGN KEY (`course_id`) REFERENCES `elective_courses`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `course_selections` ADD CONSTRAINT `course_selections_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_teacher_id_users_id_fk` FOREIGN KEY (`teacher_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `elective_courses` ADD CONSTRAINT `elective_courses_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_submission_id_exam_submissions_id_fk` FOREIGN KEY (`submission_id`) REFERENCES `exam_submissions`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `exam_proctoring_events` ADD CONSTRAINT `exam_proctoring_events_exam_id_exams_id_fk` FOREIGN KEY (`exam_id`) REFERENCES `exams`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `knowledge_point_mastery` ADD CONSTRAINT `knowledge_point_mastery_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `knowledge_point_mastery` ADD CONSTRAINT `knowledge_point_mastery_knowledge_point_id_knowledge_points_id_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_generated_by_users_id_fk` FOREIGN KEY (`generated_by`) REFERENCES `users`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `course_selections_course_idx` ON `course_selections` (`course_id`);--> statement-breakpoint
-CREATE INDEX `course_selections_student_idx` ON `course_selections` (`student_id`);--> statement-breakpoint
-CREATE INDEX `course_selections_status_idx` ON `course_selections` (`selection_status`);--> statement-breakpoint
-CREATE INDEX `elective_courses_teacher_idx` ON `elective_courses` (`teacher_id`);--> statement-breakpoint
-CREATE INDEX `elective_courses_subject_idx` ON `elective_courses` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `elective_courses_grade_idx` ON `elective_courses` (`grade_id`);--> statement-breakpoint
-CREATE INDEX `elective_courses_status_idx` ON `elective_courses` (`status`);--> statement-breakpoint
-CREATE INDEX `proctoring_submission_idx` ON `exam_proctoring_events` (`submission_id`);--> statement-breakpoint
-CREATE INDEX `proctoring_student_idx` ON `exam_proctoring_events` (`student_id`);--> statement-breakpoint
-CREATE INDEX `proctoring_exam_idx` ON `exam_proctoring_events` (`exam_id`);--> statement-breakpoint
-CREATE INDEX `proctoring_event_type_idx` ON `exam_proctoring_events` (`event_type`);--> statement-breakpoint
-CREATE INDEX `mastery_student_idx` ON `knowledge_point_mastery` (`student_id`);--> statement-breakpoint
-CREATE INDEX `mastery_kp_idx` ON `knowledge_point_mastery` (`knowledge_point_id`);--> statement-breakpoint
-CREATE INDEX `diagnostic_student_idx` ON `learning_diagnostic_reports` (`student_id`);--> statement-breakpoint
-CREATE INDEX `diagnostic_generated_by_idx` ON `learning_diagnostic_reports` (`generated_by`);--> statement-breakpoint
-CREATE INDEX `diagnostic_status_idx` ON `learning_diagnostic_reports` (`report_status`);--> statement-breakpoint
-CREATE INDEX `diagnostic_report_type_idx` ON `learning_diagnostic_reports` (`report_type`);
\ No newline at end of file
diff --git a/drizzle/0002_tiny_lionheart.sql b/drizzle/0002_tiny_lionheart.sql
deleted file mode 100644
index b395f45..0000000
--- a/drizzle/0002_tiny_lionheart.sql
+++ /dev/null
@@ -1,58 +0,0 @@
-CREATE TABLE `lesson_plan_templates` (
-	`id` varchar(128) NOT NULL,
-	`name` varchar(100) NOT NULL,
-	`type` varchar(50) NOT NULL,
-	`scope` varchar(50) NOT NULL,
-	`blocks` json NOT NULL,
-	`creator_id` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `lesson_plan_templates_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `lesson_plan_versions` (
-	`id` varchar(128) NOT NULL,
-	`plan_id` varchar(128) NOT NULL,
-	`version_no` int NOT NULL,
-	`label` varchar(100),
-	`content` json NOT NULL,
-	`is_auto` boolean NOT NULL DEFAULT false,
-	`creator_id` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `lesson_plan_versions_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `lesson_plans` (
-	`id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`textbook_id` varchar(128),
-	`chapter_id` varchar(128),
-	`course_plan_item_id` varchar(128),
-	`subject_id` varchar(128),
-	`grade_id` varchar(128),
-	`template_id` varchar(128),
-	`template_name` varchar(100),
-	`content` json NOT NULL,
-	`status` varchar(50) NOT NULL DEFAULT 'draft',
-	`creator_id` varchar(128) NOT NULL,
-	`last_saved_at` timestamp,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `lesson_plans_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-ALTER TABLE `lesson_plan_templates` ADD CONSTRAINT `lesson_plan_templates_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plan_versions` ADD CONSTRAINT `lesson_plan_versions_plan_id_lesson_plans_id_fk` FOREIGN KEY (`plan_id`) REFERENCES `lesson_plans`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plan_versions` ADD CONSTRAINT `lesson_plan_versions_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_textbook_id_textbooks_id_fk` FOREIGN KEY (`textbook_id`) REFERENCES `textbooks`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_chapter_id_chapters_id_fk` FOREIGN KEY (`chapter_id`) REFERENCES `chapters`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_subject_id_subjects_id_fk` FOREIGN KEY (`subject_id`) REFERENCES `subjects`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `lesson_plans` ADD CONSTRAINT `lesson_plans_creator_id_users_id_fk` FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `lpt_type_creator_idx` ON `lesson_plan_templates` (`type`,`creator_id`);--> statement-breakpoint
-CREATE INDEX `lpv_plan_version_idx` ON `lesson_plan_versions` (`plan_id`,`version_no`);--> statement-breakpoint
-CREATE INDEX `lpv_plan_created_idx` ON `lesson_plan_versions` (`plan_id`,`created_at`);--> statement-breakpoint
-CREATE INDEX `lp_creator_idx` ON `lesson_plans` (`creator_id`);--> statement-breakpoint
-CREATE INDEX `lp_status_idx` ON `lesson_plans` (`status`);--> statement-breakpoint
-CREATE INDEX `lp_textbook_chapter_idx` ON `lesson_plans` (`textbook_id`,`chapter_id`);--> statement-breakpoint
-CREATE INDEX `lp_subject_grade_idx` ON `lesson_plans` (`subject_id`,`grade_id`);
\ No newline at end of file
diff --git a/drizzle/0003_diagnostic_student_nullable.sql b/drizzle/0003_diagnostic_student_nullable.sql
deleted file mode 100644
index 47c8241..0000000
--- a/drizzle/0003_diagnostic_student_nullable.sql
+++ /dev/null
@@ -1,45 +0,0 @@
-CREATE TABLE `class_invitation_codes` (
-	`id` varchar(128) NOT NULL,
-	`class_id` varchar(128) NOT NULL,
-	`code` varchar(8) NOT NULL,
-	`class_invitation_code_status` enum('active','disabled','expired','exhausted') NOT NULL DEFAULT 'active',
-	`max_uses` int,
-	`used_count` int NOT NULL DEFAULT 0,
-	`expires_at` timestamp,
-	`created_by` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	`revoked_at` timestamp,
-	`revoked_by` varchar(128),
-	`note` varchar(255),
-	CONSTRAINT `class_invitation_codes_id` PRIMARY KEY(`id`),
-	CONSTRAINT `class_invitation_codes_code_unique` UNIQUE(`code`),
-	CONSTRAINT `class_invitation_codes_code_idx` UNIQUE(`code`)
-);
---> statement-breakpoint
-CREATE TABLE `system_settings` (
-	`id` varchar(128) NOT NULL,
-	`category` varchar(50) NOT NULL,
-	`key` varchar(100) NOT NULL,
-	`value` text NOT NULL,
-	`value_type` varchar(20) NOT NULL DEFAULT 'string',
-	`updated_by` varchar(128),
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `system_settings_id` PRIMARY KEY(`id`),
-	CONSTRAINT `ss_category_key_idx` UNIQUE(`category`,`key`)
-);
---> statement-breakpoint
-ALTER TABLE `homework_assignments` MODIFY COLUMN `source_exam_id` varchar(128);--> statement-breakpoint
-ALTER TABLE `learning_diagnostic_reports` MODIFY COLUMN `student_id` varchar(128);--> statement-breakpoint
-ALTER TABLE `messages` ADD `sender_deleted_at` timestamp;--> statement-breakpoint
-ALTER TABLE `messages` ADD `receiver_deleted_at` timestamp;--> statement-breakpoint
-ALTER TABLE `notification_preferences` ADD `quiet_hours_enabled` boolean DEFAULT false NOT NULL;--> statement-breakpoint
-ALTER TABLE `notification_preferences` ADD `quiet_hours_start` varchar(5);--> statement-breakpoint
-ALTER TABLE `notification_preferences` ADD `quiet_hours_end` varchar(5);--> statement-breakpoint
-ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `class_invitation_codes_class_id_classes_id_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `class_invitation_codes_created_by_users_id_fk` FOREIGN KEY (`created_by`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `class_invitation_codes` ADD CONSTRAINT `cic_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `class_invitation_codes_class_idx` ON `class_invitation_codes` (`class_id`);--> statement-breakpoint
-CREATE INDEX `class_invitation_codes_status_expires_idx` ON `class_invitation_codes` (`class_invitation_code_status`,`expires_at`);--> statement-breakpoint
-CREATE INDEX `ss_category_idx` ON `system_settings` (`category`);
\ No newline at end of file
diff --git a/drizzle/0004_calm_sandman.sql b/drizzle/0004_calm_sandman.sql
deleted file mode 100644
index 541851f..0000000
--- a/drizzle/0004_calm_sandman.sql
+++ /dev/null
@@ -1,11 +0,0 @@
-CREATE TABLE `knowledge_point_prerequisites` (
-	`knowledge_point_id` varchar(128) NOT NULL,
-	`prerequisite_kp_id` varchar(128) NOT NULL,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `knowledge_point_prerequisites_knowledge_point_id_prerequisite_kp_id_pk` PRIMARY KEY(`knowledge_point_id`,`prerequisite_kp_id`)
-);
---> statement-breakpoint
-ALTER TABLE `knowledge_point_prerequisites` ADD CONSTRAINT `kp_prereq_kp_fk` FOREIGN KEY (`knowledge_point_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `knowledge_point_prerequisites` ADD CONSTRAINT `kp_prereq_prereq_fk` FOREIGN KEY (`prerequisite_kp_id`) REFERENCES `knowledge_points`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `kp_prereq_kp_idx` ON `knowledge_point_prerequisites` (`knowledge_point_id`);--> statement-breakpoint
-CREATE INDEX `kp_prereq_prereq_idx` ON `knowledge_point_prerequisites` (`prerequisite_kp_id`);
\ No newline at end of file
diff --git a/drizzle/0005_messy_pride.sql b/drizzle/0005_messy_pride.sql
deleted file mode 100644
index 39cbb60..0000000
--- a/drizzle/0005_messy_pride.sql
+++ /dev/null
@@ -1,48 +0,0 @@
-CREATE TABLE `error_book_items` (
-	`id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`source_type` enum('exam','homework','manual') NOT NULL DEFAULT 'manual',
-	`source_id` varchar(128),
-	`student_answer` json,
-	`correct_answer` json,
-	`subject_id` varchar(128),
-	`knowledge_point_ids` json,
-	`error_status` enum('new','learning','mastered','archived') NOT NULL DEFAULT 'new',
-	`mastery_level` int NOT NULL DEFAULT 0,
-	`next_review_at` timestamp,
-	`review_interval` int NOT NULL DEFAULT 1,
-	`review_count` int NOT NULL DEFAULT 0,
-	`correct_streak` int NOT NULL DEFAULT 0,
-	`note` text,
-	`error_tags` json,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	`updated_at` timestamp NOT NULL DEFAULT (now()) ON UPDATE CURRENT_TIMESTAMP,
-	CONSTRAINT `error_book_items_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-CREATE TABLE `error_book_reviews` (
-	`id` varchar(128) NOT NULL,
-	`item_id` varchar(128) NOT NULL,
-	`student_id` varchar(128) NOT NULL,
-	`review_result` enum('again','hard','good','easy') NOT NULL,
-	`reviewed_at` timestamp NOT NULL DEFAULT (now()),
-	`new_interval` int,
-	`new_mastery_level` int,
-	`created_at` timestamp NOT NULL DEFAULT (now()),
-	CONSTRAINT `error_book_reviews_id` PRIMARY KEY(`id`)
-);
---> statement-breakpoint
-ALTER TABLE `error_book_items` ADD CONSTRAINT `error_book_items_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `error_book_items` ADD CONSTRAINT `error_book_items_question_id_questions_id_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE no action ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `error_book_reviews` ADD CONSTRAINT `error_book_reviews_item_id_error_book_items_id_fk` FOREIGN KEY (`item_id`) REFERENCES `error_book_items`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-ALTER TABLE `error_book_reviews` ADD CONSTRAINT `error_book_reviews_student_id_users_id_fk` FOREIGN KEY (`student_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `eb_item_student_idx` ON `error_book_items` (`student_id`);--> statement-breakpoint
-CREATE INDEX `eb_item_student_status_idx` ON `error_book_items` (`student_id`,`error_status`);--> statement-breakpoint
-CREATE INDEX `eb_item_student_review_idx` ON `error_book_items` (`student_id`,`next_review_at`);--> statement-breakpoint
-CREATE INDEX `eb_item_question_idx` ON `error_book_items` (`question_id`);--> statement-breakpoint
-CREATE INDEX `eb_item_subject_idx` ON `error_book_items` (`subject_id`);--> statement-breakpoint
-CREATE INDEX `eb_item_source_idx` ON `error_book_items` (`source_type`,`source_id`);--> statement-breakpoint
-CREATE INDEX `eb_review_item_idx` ON `error_book_reviews` (`item_id`);--> statement-breakpoint
-CREATE INDEX `eb_review_student_idx` ON `error_book_reviews` (`student_id`);--> statement-breakpoint
-CREATE INDEX `eb_review_student_reviewed_idx` ON `error_book_reviews` (`student_id`,`reviewed_at`);
\ No newline at end of file
diff --git a/drizzle/0006_notification_logs.sql b/drizzle/0006_notification_logs.sql
deleted file mode 100644
index 5a4dde0..0000000
--- a/drizzle/0006_notification_logs.sql
+++ /dev/null
@@ -1,15 +0,0 @@
-CREATE TABLE `notification_logs` (
-	`id` varchar(128) PRIMARY KEY NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`title` varchar(255) NOT NULL,
-	`channel` varchar(32) NOT NULL,
-	`status` varchar(16) NOT NULL,
-	`message_id` varchar(255),
-	`error` text,
-	`sent_at` timestamp DEFAULT (now()) NOT NULL,
-	CONSTRAINT `notification_logs_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action
-);
-CREATE INDEX `notification_logs_user_idx` ON `notification_logs`(`user_id`);
-CREATE INDEX `notification_logs_channel_idx` ON `notification_logs`(`channel`);
-CREATE INDEX `notification_logs_status_idx` ON `notification_logs`(`status`);
-CREATE INDEX `notification_logs_sent_at_idx` ON `notification_logs`(`sent_at`);
diff --git a/drizzle/0007_notification_priority_archive.sql b/drizzle/0007_notification_priority_archive.sql
deleted file mode 100644
index a569881..0000000
--- a/drizzle/0007_notification_priority_archive.sql
+++ /dev/null
@@ -1,4 +0,0 @@
-ALTER TABLE `message_notifications` ADD COLUMN `priority` varchar(16) DEFAULT 'normal' NOT NULL;
-ALTER TABLE `message_notifications` ADD COLUMN `is_archived` boolean DEFAULT false NOT NULL;
-CREATE INDEX `message_notifications_priority_idx` ON `message_notifications`(`priority`);
-CREATE INDEX `message_notifications_user_archived_idx` ON `message_notifications`(`user_id`, `is_archived`);
diff --git a/drizzle/0008_message_star_draft.sql b/drizzle/0008_message_star_draft.sql
deleted file mode 100644
index a3e6ab1..0000000
--- a/drizzle/0008_message_star_draft.sql
+++ /dev/null
@@ -1,17 +0,0 @@
-ALTER TABLE `messages` ADD COLUMN `is_starred` boolean DEFAULT false NOT NULL;
-CREATE INDEX `messages_receiver_starred_idx` ON `messages`(`receiver_id`, `is_starred`);
-
-CREATE TABLE `message_drafts` (
-	`id` varchar(128) PRIMARY KEY NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`receiver_id` varchar(128),
-	`subject` varchar(255),
-	`content` text,
-	`parent_message_id` varchar(128),
-	`updated_at` timestamp DEFAULT (now()) ON UPDATE now() NOT NULL,
-	`created_at` timestamp DEFAULT (now()) NOT NULL,
-	CONSTRAINT `message_drafts_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action,
-	CONSTRAINT `message_drafts_receiver_id_users_id_fk` FOREIGN KEY (`receiver_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action
-);
-CREATE INDEX `message_drafts_user_idx` ON `message_drafts`(`user_id`);
-CREATE INDEX `message_drafts_user_updated_idx` ON `message_drafts`(`user_id`, `updated_at`);
diff --git a/drizzle/0009_announcement_pin_reads.sql b/drizzle/0009_announcement_pin_reads.sql
deleted file mode 100644
index 7330993..0000000
--- a/drizzle/0009_announcement_pin_reads.sql
+++ /dev/null
@@ -1,14 +0,0 @@
-ALTER TABLE `announcements` ADD COLUMN `is_pinned` boolean DEFAULT false NOT NULL;
-CREATE INDEX `announcements_status_pinned_idx` ON `announcements`(`status`, `is_pinned`);
-
-CREATE TABLE `announcement_reads` (
-	`id` varchar(128) PRIMARY KEY NOT NULL,
-	`announcement_id` varchar(128) NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`read_at` timestamp DEFAULT (now()) NOT NULL,
-	CONSTRAINT `announcement_reads_announcement_id_announcements_id_fk` FOREIGN KEY (`announcement_id`) REFERENCES `announcements`(`id`) ON DELETE cascade ON UPDATE no action,
-	CONSTRAINT `announcement_reads_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action
-);
-CREATE INDEX `announcement_reads_announcement_idx` ON `announcement_reads`(`announcement_id`);
-CREATE INDEX `announcement_reads_user_idx` ON `announcement_reads`(`user_id`);
-CREATE UNIQUE INDEX `announcement_reads_unique_idx` ON `announcement_reads`(`announcement_id`, `user_id`);
diff --git a/drizzle/0010_grade_record_answers.sql b/drizzle/0010_grade_record_answers.sql
deleted file mode 100644
index f0c4e36..0000000
--- a/drizzle/0010_grade_record_answers.sql
+++ /dev/null
@@ -1,14 +0,0 @@
-CREATE TABLE `grade_record_answers` (
-	`id` varchar(128) PRIMARY KEY NOT NULL,
-	`grade_record_id` varchar(128) NOT NULL,
-	`question_id` varchar(128) NOT NULL,
-	`score` decimal(6, 2) NOT NULL,
-	`full_score` decimal(6, 2) NOT NULL,
-	`feedback` text,
-	`created_at` timestamp DEFAULT (now()) NOT NULL,
-	`updated_at` timestamp DEFAULT (now()) NOT NULL,
-	CONSTRAINT `gra_gr_fk` FOREIGN KEY (`grade_record_id`) REFERENCES `grade_records`(`id`) ON DELETE cascade ON UPDATE no action,
-	CONSTRAINT `gra_q_fk` FOREIGN KEY (`question_id`) REFERENCES `questions`(`id`) ON DELETE cascade ON UPDATE no action
-);
-CREATE INDEX `grade_record_answers_record_idx` ON `grade_record_answers`(`grade_record_id`);
-CREATE INDEX `grade_record_answers_question_idx` ON `grade_record_answers`(`question_id`);
diff --git a/drizzle/0011_rbac_role_flags_and_seed.sql b/drizzle/0011_rbac_role_flags_and_seed.sql
deleted file mode 100644
index 5288772..0000000
--- a/drizzle/0011_rbac_role_flags_and_seed.sql
+++ /dev/null
@@ -1,85 +0,0 @@
--- 0011_rbac_role_flags_and_seed.sql
--- RBAC: add is_system/is_enabled columns to roles table and seed role_permissions.
-
--- 1. Add is_system and is_enabled columns to roles table.
-ALTER TABLE `roles`
-  ADD COLUMN `is_system` boolean DEFAULT false NOT NULL,
-  ADD COLUMN `is_enabled` boolean DEFAULT true NOT NULL;
-
--- 2. Mark the 6 builtin roles as system roles.
-UPDATE `roles` SET `is_system` = true
-  WHERE `name` IN ('admin', 'teacher', 'student', 'parent', 'grade_head', 'teaching_head');
-
--- 3. Seed role_permissions for builtin roles.
---    Uses INSERT IGNORE so re-running is safe (role_permissions has a composite PK).
---    Permissions are resolved from ROLE_PERMISSIONS_SEED in src/shared/lib/permissions.ts.
-
--- admin
-INSERT IGNORE INTO `role_permissions` (`role_id`, `permission`)
-  SELECT id, 'exam:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:duplicate' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:publish' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:ai_generate' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'homework:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'homework:grade' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'question:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'question:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'question:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'question:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'textbook:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'textbook:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'textbook:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'textbook:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:enroll' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'class:schedule' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'school:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'grade:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'user:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'user:profile_update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'ai:chat' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'ai:configure' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'settings:admin' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'audit_log:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'announcement:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'announcement:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'grade_record:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'grade_record:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'course_plan:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'course_plan:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'attendance:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'attendance:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'message:send' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'message:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'message:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'schedule:auto' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'schedule:adjust' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'elective:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'elective:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:proctor' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'exam:proctor:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'diagnostic:manage' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'diagnostic:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'lesson_plan:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'lesson_plan:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'lesson_plan:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'lesson_plan:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'lesson_plan:publish' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'file:upload' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'file:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'file:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'dashboard:admin_read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'error_book:analytics_read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'adaptive_practice:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'role:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'role:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'role:update' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'role:delete' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'role:assign' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'permission:read' FROM `roles` WHERE `name` = 'admin';
diff --git a/drizzle/0012_diagnostic_grade_id.sql b/drizzle/0012_diagnostic_grade_id.sql
deleted file mode 100644
index 1e18525..0000000
--- a/drizzle/0012_diagnostic_grade_id.sql
+++ /dev/null
@@ -1,4 +0,0 @@
--- v4-P2-3: Add gradeId column to learning_diagnostic_reports for grade-level diagnostic reports
-ALTER TABLE `learning_diagnostic_reports` ADD COLUMN `grade_id` varchar(128);--> statement-breakpoint
-ALTER TABLE `learning_diagnostic_reports` ADD CONSTRAINT `learning_diagnostic_reports_grade_id_grades_id_fk` FOREIGN KEY (`grade_id`) REFERENCES `grades`(`id`) ON DELETE set null ON UPDATE no action;--> statement-breakpoint
-CREATE INDEX `diagnostic_grade_idx` ON `learning_diagnostic_reports` (`grade_id`);
diff --git a/drizzle/0013_message_recall.sql b/drizzle/0013_message_recall.sql
deleted file mode 100644
index 69c70df..0000000
--- a/drizzle/0013_message_recall.sql
+++ /dev/null
@@ -1,2 +0,0 @@
--- P2-4: 消息撤回功能（2 分钟窗口）
-ALTER TABLE `messages` ADD COLUMN `recalled_at` timestamp;
diff --git a/drizzle/0014_message_templates.sql b/drizzle/0014_message_templates.sql
deleted file mode 100644
index c85bc33..0000000
--- a/drizzle/0014_message_templates.sql
+++ /dev/null
@@ -1,13 +0,0 @@
--- P2-6: 快捷回复模板
-CREATE TABLE `message_templates` (
-	`id` varchar(128) PRIMARY KEY NOT NULL,
-	`user_id` varchar(128) NOT NULL,
-	`title` varchar(100) NOT NULL,
-	`content` text NOT NULL,
-	`sort_order` integer DEFAULT 0 NOT NULL,
-	`updated_at` timestamp DEFAULT (now()) ON UPDATE now() NOT NULL,
-	`created_at` timestamp DEFAULT (now()) NOT NULL,
-	CONSTRAINT `message_templates_user_id_users_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE cascade ON UPDATE no action
-);
-CREATE INDEX `message_templates_user_idx` ON `message_templates`(`user_id`);
-CREATE INDEX `message_templates_user_sort_idx` ON `message_templates`(`user_id`, `sort_order`);
diff --git a/drizzle/0015_group_messages.sql b/drizzle/0015_group_messages.sql
deleted file mode 100644
index 7a3ea8a..0000000
--- a/drizzle/0015_group_messages.sql
+++ /dev/null
@@ -1,3 +0,0 @@
--- P2-2: 群组消息（教师→全班家长，fan-out on write）
-ALTER TABLE `messages` ADD COLUMN `group_message_id` varchar(128);
-CREATE INDEX `messages_group_message_idx` ON `messages`(`group_message_id`);
diff --git a/drizzle/0016_invitation_codes.sql b/drizzle/0016_invitation_codes.sql
deleted file mode 100644
index ea35d50..0000000
--- a/drizzle/0016_invitation_codes.sql
+++ /dev/null
@@ -1,19 +0,0 @@
--- audit-P2-3: 注册邀请码表（admin 批量生成，注册时校验 + 自动分配角色/班级）
-CREATE TABLE IF NOT EXISTS `invitation_codes` (
-  `id` serial PRIMARY KEY,
-  `code` varchar(64) NOT NULL,
-  `email` varchar(255),
-  `role` varchar(50) NOT NULL,
-  `class_id` varchar(128),
-  `notes` varchar(500),
-  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  `created_by` varchar(128),
-  `expires_at` timestamp NULL,
-  `used_by` varchar(128),
-  `used_at` timestamp NULL,
-  UNIQUE KEY `invitation_codes_code_unique` (`code`)
-);
-
-CREATE INDEX `invitation_codes_code_idx` ON `invitation_codes`(`code`);
-CREATE INDEX `invitation_codes_email_idx` ON `invitation_codes`(`email`);
-CREATE INDEX `invitation_codes_used_by_idx` ON `invitation_codes`(`used_by`);
diff --git a/drizzle/0016_message_reports_and_blocks.sql b/drizzle/0016_message_reports_and_blocks.sql
deleted file mode 100644
index 460ecf3..0000000
--- a/drizzle/0016_message_reports_and_blocks.sql
+++ /dev/null
@@ -1,35 +0,0 @@
--- P2-5: 消息举报 + 用户屏蔽
--- 1. message_reports: 举报记录（reporterId → messageId / reportedUserId）
--- 2. user_blocks: 用户屏蔽关系（blockerId → blockedId，唯一约束防重复）
-
-CREATE TABLE `message_reports` (
-  `id` varchar(128) NOT NULL,
-  `reporter_id` varchar(128) NOT NULL,
-  `message_id` varchar(128) NOT NULL,
-  `reported_user_id` varchar(128) NOT NULL,
-  `reason` varchar(50) NOT NULL,
-  `description` text,
-  `status` varchar(20) NOT NULL DEFAULT 'pending',
-  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  PRIMARY KEY (`id`),
-  INDEX `message_reports_reporter_idx` (`reporter_id`),
-  INDEX `message_reports_message_idx` (`message_id`),
-  INDEX `message_reports_reported_user_idx` (`reported_user_id`),
-  INDEX `message_reports_status_idx` (`status`),
-  CONSTRAINT `message_reports_reporter_id_users_id_fk` FOREIGN KEY (`reporter_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
-  CONSTRAINT `message_reports_message_id_messages_id_fk` FOREIGN KEY (`message_id`) REFERENCES `messages`(`id`) ON DELETE CASCADE,
-  CONSTRAINT `message_reports_reported_user_id_users_id_fk` FOREIGN KEY (`reported_user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE
-);
-
-CREATE TABLE `user_blocks` (
-  `id` varchar(128) NOT NULL,
-  `blocker_id` varchar(128) NOT NULL,
-  `blocked_id` varchar(128) NOT NULL,
-  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  PRIMARY KEY (`id`),
-  UNIQUE INDEX `user_blocks_blocker_blocked_uniq` (`blocker_id`, `blocked_id`),
-  INDEX `user_blocks_blocker_idx` (`blocker_id`),
-  CONSTRAINT `user_blocks_blocker_id_users_id_fk` FOREIGN KEY (`blocker_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
-  CONSTRAINT `user_blocks_blocked_id_users_id_fk` FOREIGN KEY (`blocked_id`) REFERENCES `users`(`id`) ON DELETE CASCADE
-);
diff --git a/drizzle/0017_draft_device_sync.sql b/drizzle/0017_draft_device_sync.sql
deleted file mode 100644
index 69ae2db..0000000
--- a/drizzle/0017_draft_device_sync.sql
+++ /dev/null
@@ -1,8 +0,0 @@
--- P2-10: 跨设备草稿同步
--- 1. 新增 device_id 列（标识来源设备）
--- 2. 新增 version 列（乐观锁，冲突检测）
--- 3. 新增 (user_id, parent_message_id) 索引（按会话查询最新版本草稿）
-
-ALTER TABLE `message_drafts` ADD COLUMN `device_id` varchar(128);
-ALTER TABLE `message_drafts` ADD COLUMN `version` int NOT NULL DEFAULT 1;
-CREATE INDEX `message_drafts_user_parent_idx` ON `message_drafts`(`user_id`, `parent_message_id`);
diff --git a/drizzle/0018_attendance_status_reason.sql b/drizzle/0018_attendance_status_reason.sql
deleted file mode 100644
index 2c8c6ce..0000000
--- a/drizzle/0018_attendance_status_reason.sql
+++ /dev/null
@@ -1,11 +0,0 @@
--- L-1: 考勤状态细分 + 原因字段
--- 1. 扩展 attendance_records.status 枚举：新增 'school_activity'（校内活动请假，如运动会、研学、社团活动）
--- 2. 新增 reason 字段：记录缺勤/迟到/早退/请假的具体原因（最多 255 字符），与 remark 区分
---    - remark：教师备注（自由文本，可记录点名时观察到的情况）
---    - reason：标准化原因（用于统计与家长通知，如"病假-感冒"、"家中有事"等）
-
-ALTER TABLE `attendance_records`
-  MODIFY COLUMN `status`
-  ENUM('present','absent','late','early_leave','excused','school_activity') NOT NULL;
-
-ALTER TABLE `attendance_records` ADD COLUMN `reason` varchar(255);
diff --git a/drizzle/0019_attendance_warning_thresholds.sql b/drizzle/0019_attendance_warning_thresholds.sql
deleted file mode 100644
index e0ce62d..0000000
--- a/drizzle/0019_attendance_warning_thresholds.sql
+++ /dev/null
@@ -1,6 +0,0 @@
--- L-3：出勤率阈值预警
--- 新增 attendance_rate_threshold（出勤率阈值，默认 90%）
--- 新增 consecutive_absence_threshold（连续缺勤阈值，默认 3 次）
-ALTER TABLE `attendance_rules`
-  ADD COLUMN `attendance_rate_threshold` int DEFAULT 90,
-  ADD COLUMN `consecutive_absence_threshold` int DEFAULT 3;
diff --git a/drizzle/0020_leave_requests.sql b/drizzle/0020_leave_requests.sql
deleted file mode 100644
index 2ebc96e..0000000
--- a/drizzle/0020_leave_requests.sql
+++ /dev/null
@@ -1,53 +0,0 @@
--- 0020_leave_requests.sql
--- L-5 在线请假流程：创建 leave_requests 表。
-
-CREATE TABLE IF NOT EXISTS `leave_requests` (
-  `id` varchar(128) NOT NULL,
-  `student_id` varchar(128) NOT NULL,
-  `requester_id` varchar(128) NOT NULL,
-  `class_id` varchar(128) NOT NULL,
-  `leave_type` enum('sick','personal','family','other') NOT NULL,
-  `start_date` date NOT NULL,
-  `end_date` date NOT NULL,
-  `reason` text NOT NULL,
-  `status` enum('pending','approved','rejected','cancelled') NOT NULL DEFAULT 'pending',
-  `reviewer_id` varchar(128) DEFAULT NULL,
-  `review_comment` text,
-  `reviewed_at` timestamp NULL DEFAULT NULL,
-  `attendance_synced` boolean NOT NULL DEFAULT false,
-  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  PRIMARY KEY (`id`),
-  KEY `leave_requests_student_idx` (`student_id`),
-  KEY `leave_requests_requester_idx` (`requester_id`),
-  KEY `leave_requests_class_idx` (`class_id`),
-  KEY `leave_requests_status_idx` (`status`),
-  KEY `leave_requests_reviewer_idx` (`reviewer_id`),
-  KEY `leave_requests_class_status_idx` (`class_id`, `status`),
-  KEY `leave_requests_student_status_idx` (`student_id`, `status`),
-  CONSTRAINT `lr_c_fk` FOREIGN KEY (`class_id`) REFERENCES `classes` (`id`) ON DELETE CASCADE,
-  CONSTRAINT `lr_s_fk` FOREIGN KEY (`student_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
-  CONSTRAINT `lr_rq_fk` FOREIGN KEY (`requester_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
-  CONSTRAINT `lr_rv_fk` FOREIGN KEY (`reviewer_id`) REFERENCES `users` (`id`) ON DELETE SET NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
-
--- 为 builtin 角色注入新权限（INSERT IGNORE 幂等）
--- admin：三个权限全有
-INSERT IGNORE INTO `role_permissions` (`role_id`, `permission`)
-  SELECT id, 'leave_request:create' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'admin'
-  UNION ALL SELECT id, 'leave_request:review' FROM `roles` WHERE `name` = 'admin'
-  -- teacher：read + review（班主任审批本班请假）
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'teacher'
-  UNION ALL SELECT id, 'leave_request:review' FROM `roles` WHERE `name` = 'teacher'
-  -- parent：create + read（代子女提交、查看子女请假记录）
-  UNION ALL SELECT id, 'leave_request:create' FROM `roles` WHERE `name` = 'parent'
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'parent'
-  -- student：create + read（本人提交、查看本人请假记录）
-  UNION ALL SELECT id, 'leave_request:create' FROM `roles` WHERE `name` = 'student'
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'student'
-  -- grade_head / teaching_head：read + review（年级主任/教务主任可审批）
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'grade_head'
-  UNION ALL SELECT id, 'leave_request:review' FROM `roles` WHERE `name` = 'grade_head'
-  UNION ALL SELECT id, 'leave_request:read' FROM `roles` WHERE `name` = 'teaching_head'
-  UNION ALL SELECT id, 'leave_request:review' FROM `roles` WHERE `name` = 'teaching_head';
diff --git a/drizzle/0021_attendance_period.sql b/drizzle/0021_attendance_period.sql
deleted file mode 100644
index 0b937b5..0000000
--- a/drizzle/0021_attendance_period.sql
+++ /dev/null
@@ -1,20 +0,0 @@
--- 0021_attendance_period.sql
--- L-6 节次考勤：为 attendance_records 表添加 period 字段。
---
--- 节次枚举：
---   morning_reading  早读
---   morning          上午
---   afternoon        下午
---   evening          晚自习
---   full_day         全日（默认值，向后兼容：null 也表示全日）
---
--- 向后兼容策略：
---   - 新增 period 列为 NULLABLE，已有数据保持 NULL（视为 full_day）
---   - 新记录由应用层显式写入 period；未指定时写入 'full_day'
---   - 查询层 period IS NULL OR period = 'full_day' 均视为全日记录
-
-ALTER TABLE `attendance_records`
-  ADD COLUMN `period` ENUM('morning_reading','morning','afternoon','evening','full_day') NULL DEFAULT NULL AFTER `date`;
-
--- 复合索引：班级 + 日期 + 节次，支持按节次查询班级当日点名
-CREATE INDEX `attendance_records_class_date_period_idx` ON `attendance_records` (`class_id`, `date`, `period`);
diff --git a/drizzle/meta/0000_snapshot.json b/drizzle/meta/0000_snapshot.json
index 85f7e2f..a1fe520 100644
--- a/drizzle/meta/0000_snapshot.json
+++ b/drizzle/meta/0000_snapshot.json
@@ -1,7 +1,7 @@
 {
   "version": "5",
   "dialect": "mysql",
-  "id": "0ec4760a-6847-43de-8c01-13cb9676df8c",
+  "id": "8faf42f7-fb86-409b-91be-a8875fb70e27",
   "prevId": "00000000-0000-0000-0000-000000000000",
   "tables": {
     "academic_years": {
@@ -225,7 +225,7 @@
         },
         "provider": {
           "name": "provider",
-          "type": "enum('zhipu','openai','gemini','custom')",
+          "type": "enum('zhipu','openai','gemini','custom','ollama')",
           "primaryKey": false,
           "notNull": true,
           "autoincrement": false
@@ -266,6 +266,14 @@
           "autoincrement": false,
           "default": false
         },
+        "visibility": {
+          "name": "visibility",
+          "type": "enum('public','private')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'private'"
+        },
         "created_by": {
           "name": "created_by",
           "type": "varchar(128)",
@@ -312,6 +320,20 @@
             "is_default"
           ],
           "isUnique": false
+        },
+        "ai_provider_visibility_idx": {
+          "name": "ai_provider_visibility_idx",
+          "columns": [
+            "visibility"
+          ],
+          "isUnique": false
+        },
+        "ai_provider_created_by_idx": {
+          "name": "ai_provider_created_by_idx",
+          "columns": [
+            "created_by"
+          ],
+          "isUnique": false
         }
       },
       "foreignKeys": {},
@@ -326,6 +348,102 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "announcement_reads": {
+      "name": "announcement_reads",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "announcement_id": {
+          "name": "announcement_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "read_at": {
+          "name": "read_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "announcement_reads_announcement_idx": {
+          "name": "announcement_reads_announcement_idx",
+          "columns": [
+            "announcement_id"
+          ],
+          "isUnique": false
+        },
+        "announcement_reads_user_idx": {
+          "name": "announcement_reads_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        },
+        "announcement_reads_unique_idx": {
+          "name": "announcement_reads_unique_idx",
+          "columns": [
+            "announcement_id",
+            "user_id"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {
+        "announcement_reads_announcement_id_announcements_id_fk": {
+          "name": "announcement_reads_announcement_id_announcements_id_fk",
+          "tableFrom": "announcement_reads",
+          "tableTo": "announcements",
+          "columnsFrom": [
+            "announcement_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "announcement_reads_user_id_users_id_fk": {
+          "name": "announcement_reads_user_id_users_id_fk",
+          "tableFrom": "announcement_reads",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "announcement_reads_id": {
+          "name": "announcement_reads_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "announcements": {
       "name": "announcements",
       "columns": {
@@ -394,6 +512,14 @@
           "notNull": false,
           "autoincrement": false
         },
+        "is_pinned": {
+          "name": "is_pinned",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -447,6 +573,14 @@
             "target_class_id"
           ],
           "isUnique": false
+        },
+        "announcements_status_pinned_idx": {
+          "name": "announcements_status_pinned_idx",
+          "columns": [
+            "status",
+            "is_pinned"
+          ],
+          "isUnique": false
         }
       },
       "foreignKeys": {
@@ -515,11 +649,18 @@
         },
         "status": {
           "name": "status",
-          "type": "enum('present','absent','late','early_leave','excused')",
+          "type": "enum('present','absent','late','early_leave','excused','school_activity')",
           "primaryKey": false,
           "notNull": true,
           "autoincrement": false
         },
+        "period": {
+          "name": "period",
+          "type": "enum('morning_reading','morning','afternoon','evening','full_day')",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
         "remark": {
           "name": "remark",
           "type": "text",
@@ -527,6 +668,13 @@
           "notNull": false,
           "autoincrement": false
         },
+        "reason": {
+          "name": "reason",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
         "recorded_by": {
           "name": "recorded_by",
           "type": "varchar(128)",
@@ -603,6 +751,15 @@
             "recorded_by"
           ],
           "isUnique": false
+        },
+        "attendance_records_class_date_period_idx": {
+          "name": "attendance_records_class_date_period_idx",
+          "columns": [
+            "class_id",
+            "date",
+            "period"
+          ],
+          "isUnique": false
         }
       },
       "foreignKeys": {
@@ -737,6 +894,22 @@
           "autoincrement": false,
           "default": false
         },
+        "attendance_rate_threshold": {
+          "name": "attendance_rate_threshold",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 90
+        },
+        "consecutive_absence_threshold": {
+          "name": "consecutive_absence_threshold",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 3
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -751,8 +924,7 @@
           "primaryKey": false,
           "notNull": true,
           "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
+          "onUpdate": true
         }
       },
       "indexes": {
@@ -1138,6 +1310,189 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "class_invitation_codes": {
+      "name": "class_invitation_codes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "class_id": {
+          "name": "class_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "code": {
+          "name": "code",
+          "type": "varchar(8)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "class_invitation_code_status": {
+          "name": "class_invitation_code_status",
+          "type": "enum('active','disabled','expired','exhausted')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'active'"
+        },
+        "max_uses": {
+          "name": "max_uses",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "used_count": {
+          "name": "used_count",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_by": {
+          "name": "created_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "revoked_at": {
+          "name": "revoked_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "revoked_by": {
+          "name": "revoked_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "note": {
+          "name": "note",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "class_invitation_codes_code_idx": {
+          "name": "class_invitation_codes_code_idx",
+          "columns": [
+            "code"
+          ],
+          "isUnique": true
+        },
+        "class_invitation_codes_class_idx": {
+          "name": "class_invitation_codes_class_idx",
+          "columns": [
+            "class_id"
+          ],
+          "isUnique": false
+        },
+        "class_invitation_codes_status_expires_idx": {
+          "name": "class_invitation_codes_status_expires_idx",
+          "columns": [
+            "class_invitation_code_status",
+            "expires_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "class_invitation_codes_class_id_classes_id_fk": {
+          "name": "class_invitation_codes_class_id_classes_id_fk",
+          "tableFrom": "class_invitation_codes",
+          "tableTo": "classes",
+          "columnsFrom": [
+            "class_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "class_invitation_codes_created_by_users_id_fk": {
+          "name": "class_invitation_codes_created_by_users_id_fk",
+          "tableFrom": "class_invitation_codes",
+          "tableTo": "users",
+          "columnsFrom": [
+            "created_by"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "cic_c_fk": {
+          "name": "cic_c_fk",
+          "tableFrom": "class_invitation_codes",
+          "tableTo": "classes",
+          "columnsFrom": [
+            "class_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "class_invitation_codes_id": {
+          "name": "class_invitation_codes_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "class_invitation_codes_code_unique": {
+          "name": "class_invitation_codes_code_unique",
+          "columns": [
+            "code"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
     "class_schedule": {
       "name": "class_schedule",
       "columns": {
@@ -2068,6 +2423,169 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "course_selections": {
+      "name": "course_selections",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "course_id": {
+          "name": "course_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "selection_status": {
+          "name": "selection_status",
+          "type": "enum('selected','enrolled','waitlist','dropped','rejected')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'selected'"
+        },
+        "priority": {
+          "name": "priority",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 1
+        },
+        "selected_at": {
+          "name": "selected_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "enrolled_at": {
+          "name": "enrolled_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dropped_at": {
+          "name": "dropped_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "drop_reason": {
+          "name": "drop_reason",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lottery_rank": {
+          "name": "lottery_rank",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "course_selections_course_idx": {
+          "name": "course_selections_course_idx",
+          "columns": [
+            "course_id"
+          ],
+          "isUnique": false
+        },
+        "course_selections_student_idx": {
+          "name": "course_selections_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "course_selections_status_idx": {
+          "name": "course_selections_status_idx",
+          "columns": [
+            "selection_status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "course_selections_course_id_elective_courses_id_fk": {
+          "name": "course_selections_course_id_elective_courses_id_fk",
+          "tableFrom": "course_selections",
+          "tableTo": "elective_courses",
+          "columnsFrom": [
+            "course_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "course_selections_student_id_users_id_fk": {
+          "name": "course_selections_student_id_users_id_fk",
+          "tableFrom": "course_selections",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "course_selections_id": {
+          "name": "course_selections_id",
+          "columns": [
+            "id"
+          ]
+        },
+        "course_selections_course_id_student_id_pk": {
+          "name": "course_selections_course_id_student_id_pk",
+          "columns": [
+            "course_id",
+            "student_id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "data_change_logs": {
       "name": "data_change_logs",
       "columns": {
@@ -2262,6 +2780,741 @@
       },
       "checkConstraint": {}
     },
+    "elective_courses": {
+      "name": "elective_courses",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "subject_id": {
+          "name": "subject_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "teacher_id": {
+          "name": "teacher_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "grade_id": {
+          "name": "grade_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "capacity": {
+          "name": "capacity",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 30
+        },
+        "enrolled_count": {
+          "name": "enrolled_count",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "classroom": {
+          "name": "classroom",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "schedule": {
+          "name": "schedule",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "start_date": {
+          "name": "start_date",
+          "type": "date",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "end_date": {
+          "name": "end_date",
+          "type": "date",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "selection_start_at": {
+          "name": "selection_start_at",
+          "type": "datetime",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "selection_end_at": {
+          "name": "selection_end_at",
+          "type": "datetime",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "drop_deadline": {
+          "name": "drop_deadline",
+          "type": "datetime",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "enum('draft','open','closed','cancelled')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'draft'"
+        },
+        "selection_mode": {
+          "name": "selection_mode",
+          "type": "enum('fcfs','lottery')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'fcfs'"
+        },
+        "credit": {
+          "name": "credit",
+          "type": "decimal(3,1)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'1.0'"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "elective_courses_teacher_idx": {
+          "name": "elective_courses_teacher_idx",
+          "columns": [
+            "teacher_id"
+          ],
+          "isUnique": false
+        },
+        "elective_courses_subject_idx": {
+          "name": "elective_courses_subject_idx",
+          "columns": [
+            "subject_id"
+          ],
+          "isUnique": false
+        },
+        "elective_courses_grade_idx": {
+          "name": "elective_courses_grade_idx",
+          "columns": [
+            "grade_id"
+          ],
+          "isUnique": false
+        },
+        "elective_courses_status_idx": {
+          "name": "elective_courses_status_idx",
+          "columns": [
+            "status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "elective_courses_subject_id_subjects_id_fk": {
+          "name": "elective_courses_subject_id_subjects_id_fk",
+          "tableFrom": "elective_courses",
+          "tableTo": "subjects",
+          "columnsFrom": [
+            "subject_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        },
+        "elective_courses_teacher_id_users_id_fk": {
+          "name": "elective_courses_teacher_id_users_id_fk",
+          "tableFrom": "elective_courses",
+          "tableTo": "users",
+          "columnsFrom": [
+            "teacher_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "elective_courses_grade_id_grades_id_fk": {
+          "name": "elective_courses_grade_id_grades_id_fk",
+          "tableFrom": "elective_courses",
+          "tableTo": "grades",
+          "columnsFrom": [
+            "grade_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "elective_courses_id": {
+          "name": "elective_courses_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "error_book_items": {
+      "name": "error_book_items",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "question_id": {
+          "name": "question_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "source_type": {
+          "name": "source_type",
+          "type": "enum('exam','homework','manual')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'manual'"
+        },
+        "source_id": {
+          "name": "source_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "student_answer": {
+          "name": "student_answer",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "correct_answer": {
+          "name": "correct_answer",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "subject_id": {
+          "name": "subject_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "knowledge_point_ids": {
+          "name": "knowledge_point_ids",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error_status": {
+          "name": "error_status",
+          "type": "enum('new','learning','mastered','archived')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'new'"
+        },
+        "mastery_level": {
+          "name": "mastery_level",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "next_review_at": {
+          "name": "next_review_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "review_interval": {
+          "name": "review_interval",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 1
+        },
+        "review_count": {
+          "name": "review_count",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "correct_streak": {
+          "name": "correct_streak",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "note": {
+          "name": "note",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error_tags": {
+          "name": "error_tags",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "eb_item_student_idx": {
+          "name": "eb_item_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "eb_item_student_status_idx": {
+          "name": "eb_item_student_status_idx",
+          "columns": [
+            "student_id",
+            "error_status"
+          ],
+          "isUnique": false
+        },
+        "eb_item_student_review_idx": {
+          "name": "eb_item_student_review_idx",
+          "columns": [
+            "student_id",
+            "next_review_at"
+          ],
+          "isUnique": false
+        },
+        "eb_item_question_idx": {
+          "name": "eb_item_question_idx",
+          "columns": [
+            "question_id"
+          ],
+          "isUnique": false
+        },
+        "eb_item_subject_idx": {
+          "name": "eb_item_subject_idx",
+          "columns": [
+            "subject_id"
+          ],
+          "isUnique": false
+        },
+        "eb_item_source_idx": {
+          "name": "eb_item_source_idx",
+          "columns": [
+            "source_type",
+            "source_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "error_book_items_student_id_users_id_fk": {
+          "name": "error_book_items_student_id_users_id_fk",
+          "tableFrom": "error_book_items",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "error_book_items_question_id_questions_id_fk": {
+          "name": "error_book_items_question_id_questions_id_fk",
+          "tableFrom": "error_book_items",
+          "tableTo": "questions",
+          "columnsFrom": [
+            "question_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "error_book_items_id": {
+          "name": "error_book_items_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "error_book_reviews": {
+      "name": "error_book_reviews",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "item_id": {
+          "name": "item_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "review_result": {
+          "name": "review_result",
+          "type": "enum('again','hard','good','easy')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reviewed_at": {
+          "name": "reviewed_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "new_interval": {
+          "name": "new_interval",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "new_mastery_level": {
+          "name": "new_mastery_level",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "eb_review_item_idx": {
+          "name": "eb_review_item_idx",
+          "columns": [
+            "item_id"
+          ],
+          "isUnique": false
+        },
+        "eb_review_student_idx": {
+          "name": "eb_review_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "eb_review_student_reviewed_idx": {
+          "name": "eb_review_student_reviewed_idx",
+          "columns": [
+            "student_id",
+            "reviewed_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "error_book_reviews_item_id_error_book_items_id_fk": {
+          "name": "error_book_reviews_item_id_error_book_items_id_fk",
+          "tableFrom": "error_book_reviews",
+          "tableTo": "error_book_items",
+          "columnsFrom": [
+            "item_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "error_book_reviews_student_id_users_id_fk": {
+          "name": "error_book_reviews_student_id_users_id_fk",
+          "tableFrom": "error_book_reviews",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "error_book_reviews_id": {
+          "name": "error_book_reviews_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "exam_proctoring_events": {
+      "name": "exam_proctoring_events",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "submission_id": {
+          "name": "submission_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "exam_id": {
+          "name": "exam_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "event_type": {
+          "name": "event_type",
+          "type": "enum('tab_switch','window_blur','copy_attempt','paste_attempt','right_click','devtools_open','fullscreen_exit','idle_timeout')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "event_detail": {
+          "name": "event_detail",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "occurred_at": {
+          "name": "occurred_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "proctoring_submission_idx": {
+          "name": "proctoring_submission_idx",
+          "columns": [
+            "submission_id"
+          ],
+          "isUnique": false
+        },
+        "proctoring_student_idx": {
+          "name": "proctoring_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "proctoring_exam_idx": {
+          "name": "proctoring_exam_idx",
+          "columns": [
+            "exam_id"
+          ],
+          "isUnique": false
+        },
+        "proctoring_event_type_idx": {
+          "name": "proctoring_event_type_idx",
+          "columns": [
+            "event_type"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "exam_proctoring_events_submission_id_exam_submissions_id_fk": {
+          "name": "exam_proctoring_events_submission_id_exam_submissions_id_fk",
+          "tableFrom": "exam_proctoring_events",
+          "tableTo": "exam_submissions",
+          "columnsFrom": [
+            "submission_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "exam_proctoring_events_student_id_users_id_fk": {
+          "name": "exam_proctoring_events_student_id_users_id_fk",
+          "tableFrom": "exam_proctoring_events",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "exam_proctoring_events_exam_id_exams_id_fk": {
+          "name": "exam_proctoring_events_exam_id_exams_id_fk",
+          "tableFrom": "exam_proctoring_events",
+          "tableTo": "exams",
+          "columnsFrom": [
+            "exam_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "exam_proctoring_events_id": {
+          "name": "exam_proctoring_events_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "exam_questions": {
       "name": "exam_questions",
       "columns": {
@@ -2516,6 +3769,53 @@
           "notNull": false,
           "autoincrement": false
         },
+        "exam_mode": {
+          "name": "exam_mode",
+          "type": "enum('homework','timed','proctored')",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": "'homework'"
+        },
+        "duration_minutes": {
+          "name": "duration_minutes",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "shuffle_questions": {
+          "name": "shuffle_questions",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": false
+        },
+        "allow_late_start": {
+          "name": "allow_late_start",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": false
+        },
+        "late_start_grace_minutes": {
+          "name": "late_start_grace_minutes",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": 0
+        },
+        "anti_cheat_enabled": {
+          "name": "anti_cheat_enabled",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false,
+          "default": false
+        },
         "status": {
           "name": "status",
           "type": "varchar(50)",
@@ -2742,6 +4042,505 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "grade_appeals": {
+      "name": "grade_appeals",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "grade_record_id": {
+          "name": "grade_record_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "original_score": {
+          "name": "original_score",
+          "type": "decimal(6,2)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "expected_score": {
+          "name": "expected_score",
+          "type": "decimal(6,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "reason": {
+          "name": "reason",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "appeal_status": {
+          "name": "appeal_status",
+          "type": "enum('pending','approved','rejected','withdrawn')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "reviewer_id": {
+          "name": "reviewer_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "review_comment": {
+          "name": "review_comment",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "adjusted_score": {
+          "name": "adjusted_score",
+          "type": "decimal(6,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "reviewed_at": {
+          "name": "reviewed_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "ga_grade_record_idx": {
+          "name": "ga_grade_record_idx",
+          "columns": [
+            "grade_record_id"
+          ],
+          "isUnique": false
+        },
+        "ga_student_idx": {
+          "name": "ga_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "ga_status_idx": {
+          "name": "ga_status_idx",
+          "columns": [
+            "appeal_status"
+          ],
+          "isUnique": false
+        },
+        "ga_reviewer_idx": {
+          "name": "ga_reviewer_idx",
+          "columns": [
+            "reviewer_id"
+          ],
+          "isUnique": false
+        },
+        "ga_pending_lookup_idx": {
+          "name": "ga_pending_lookup_idx",
+          "columns": [
+            "grade_record_id",
+            "appeal_status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "grade_appeals_grade_record_id_grade_records_id_fk": {
+          "name": "grade_appeals_grade_record_id_grade_records_id_fk",
+          "tableFrom": "grade_appeals",
+          "tableTo": "grade_records",
+          "columnsFrom": [
+            "grade_record_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "grade_appeals_student_id_users_id_fk": {
+          "name": "grade_appeals_student_id_users_id_fk",
+          "tableFrom": "grade_appeals",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "grade_appeals_reviewer_id_users_id_fk": {
+          "name": "grade_appeals_reviewer_id_users_id_fk",
+          "tableFrom": "grade_appeals",
+          "tableTo": "users",
+          "columnsFrom": [
+            "reviewer_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "grade_appeals_id": {
+          "name": "grade_appeals_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "grade_drafts": {
+      "name": "grade_drafts",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "class_id": {
+          "name": "class_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "subject_id": {
+          "name": "subject_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "locked_by": {
+          "name": "locked_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "locked_at": {
+          "name": "locked_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lock_token": {
+          "name": "lock_token",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "gd_user_class_subject_type_idx": {
+          "name": "gd_user_class_subject_type_idx",
+          "columns": [
+            "user_id",
+            "class_id",
+            "subject_id",
+            "type"
+          ],
+          "isUnique": true
+        },
+        "gd_user_updated_idx": {
+          "name": "gd_user_updated_idx",
+          "columns": [
+            "user_id",
+            "updated_at"
+          ],
+          "isUnique": false
+        },
+        "gd_class_subject_lock_idx": {
+          "name": "gd_class_subject_lock_idx",
+          "columns": [
+            "class_id",
+            "subject_id",
+            "type",
+            "locked_by"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "grade_drafts_user_id_users_id_fk": {
+          "name": "grade_drafts_user_id_users_id_fk",
+          "tableFrom": "grade_drafts",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "grade_drafts_class_id_classes_id_fk": {
+          "name": "grade_drafts_class_id_classes_id_fk",
+          "tableFrom": "grade_drafts",
+          "tableTo": "classes",
+          "columnsFrom": [
+            "class_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "grade_drafts_subject_id_subjects_id_fk": {
+          "name": "grade_drafts_subject_id_subjects_id_fk",
+          "tableFrom": "grade_drafts",
+          "tableTo": "subjects",
+          "columnsFrom": [
+            "subject_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "grade_drafts_id": {
+          "name": "grade_drafts_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "grade_record_answers": {
+      "name": "grade_record_answers",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "grade_record_id": {
+          "name": "grade_record_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "question_id": {
+          "name": "question_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "score": {
+          "name": "score",
+          "type": "decimal(6,2)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "full_score": {
+          "name": "full_score",
+          "type": "decimal(6,2)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "feedback": {
+          "name": "feedback",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "grade_record_answers_record_idx": {
+          "name": "grade_record_answers_record_idx",
+          "columns": [
+            "grade_record_id"
+          ],
+          "isUnique": false
+        },
+        "grade_record_answers_question_idx": {
+          "name": "grade_record_answers_question_idx",
+          "columns": [
+            "question_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "grade_record_answers_grade_record_id_grade_records_id_fk": {
+          "name": "grade_record_answers_grade_record_id_grade_records_id_fk",
+          "tableFrom": "grade_record_answers",
+          "tableTo": "grade_records",
+          "columnsFrom": [
+            "grade_record_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "grade_record_answers_question_id_questions_id_fk": {
+          "name": "grade_record_answers_question_id_questions_id_fk",
+          "tableFrom": "grade_record_answers",
+          "tableTo": "questions",
+          "columnsFrom": [
+            "question_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "gra_gr_fk": {
+          "name": "gra_gr_fk",
+          "tableFrom": "grade_record_answers",
+          "tableTo": "grade_records",
+          "columnsFrom": [
+            "grade_record_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "gra_q_fk": {
+          "name": "gra_q_fk",
+          "tableFrom": "grade_record_answers",
+          "tableTo": "questions",
+          "columnsFrom": [
+            "question_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "grade_record_answers_id": {
+          "name": "grade_record_answers_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "grade_records": {
       "name": "grade_records",
       "columns": {
@@ -3464,7 +5263,7 @@
           "name": "source_exam_id",
           "type": "varchar(128)",
           "primaryKey": false,
-          "notNull": true,
+          "notNull": false,
           "autoincrement": false
         },
         "title": {
@@ -3757,6 +5556,348 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "invitation_codes": {
+      "name": "invitation_codes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "code": {
+          "name": "code",
+          "type": "varchar(64)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "email": {
+          "name": "email",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "class_id": {
+          "name": "class_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "notes": {
+          "name": "notes",
+          "type": "varchar(500)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "created_by": {
+          "name": "created_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "expires_at": {
+          "name": "expires_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "used_by": {
+          "name": "used_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "used_at": {
+          "name": "used_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "invitation_codes_code_idx": {
+          "name": "invitation_codes_code_idx",
+          "columns": [
+            "code"
+          ],
+          "isUnique": false
+        },
+        "invitation_codes_email_idx": {
+          "name": "invitation_codes_email_idx",
+          "columns": [
+            "email"
+          ],
+          "isUnique": false
+        },
+        "invitation_codes_used_by_idx": {
+          "name": "invitation_codes_used_by_idx",
+          "columns": [
+            "used_by"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "invitation_codes_id": {
+          "name": "invitation_codes_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {
+        "invitation_codes_code_unique": {
+          "name": "invitation_codes_code_unique",
+          "columns": [
+            "code"
+          ]
+        }
+      },
+      "checkConstraint": {}
+    },
+    "knowledge_point_mastery": {
+      "name": "knowledge_point_mastery",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "knowledge_point_id": {
+          "name": "knowledge_point_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "mastery_level": {
+          "name": "mastery_level",
+          "type": "decimal(5,2)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'0'"
+        },
+        "total_questions": {
+          "name": "total_questions",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "correct_questions": {
+          "name": "correct_questions",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "last_assessed_at": {
+          "name": "last_assessed_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "mastery_student_idx": {
+          "name": "mastery_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "mastery_kp_idx": {
+          "name": "mastery_kp_idx",
+          "columns": [
+            "knowledge_point_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "kpm_student_fk": {
+          "name": "kpm_student_fk",
+          "tableFrom": "knowledge_point_mastery",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "kpm_kp_fk": {
+          "name": "kpm_kp_fk",
+          "tableFrom": "knowledge_point_mastery",
+          "tableTo": "knowledge_points",
+          "columnsFrom": [
+            "knowledge_point_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "knowledge_point_mastery_id": {
+          "name": "knowledge_point_mastery_id",
+          "columns": [
+            "id"
+          ]
+        },
+        "knowledge_point_mastery_student_id_knowledge_point_id_pk": {
+          "name": "knowledge_point_mastery_student_id_knowledge_point_id_pk",
+          "columns": [
+            "student_id",
+            "knowledge_point_id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "knowledge_point_prerequisites": {
+      "name": "knowledge_point_prerequisites",
+      "columns": {
+        "knowledge_point_id": {
+          "name": "knowledge_point_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "prerequisite_kp_id": {
+          "name": "prerequisite_kp_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "kp_prereq_kp_idx": {
+          "name": "kp_prereq_kp_idx",
+          "columns": [
+            "knowledge_point_id"
+          ],
+          "isUnique": false
+        },
+        "kp_prereq_prereq_idx": {
+          "name": "kp_prereq_prereq_idx",
+          "columns": [
+            "prerequisite_kp_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "kp_prereq_kp_fk": {
+          "name": "kp_prereq_kp_fk",
+          "tableFrom": "knowledge_point_prerequisites",
+          "tableTo": "knowledge_points",
+          "columnsFrom": [
+            "knowledge_point_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "kp_prereq_prereq_fk": {
+          "name": "kp_prereq_prereq_fk",
+          "tableFrom": "knowledge_point_prerequisites",
+          "tableTo": "knowledge_points",
+          "columnsFrom": [
+            "prerequisite_kp_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "kp_prereq_pk": {
+          "name": "kp_prereq_pk",
+          "columns": [
+            "knowledge_point_id",
+            "prerequisite_kp_id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "knowledge_points": {
       "name": "knowledge_points",
       "columns": {
@@ -3864,6 +6005,2108 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "learning_diagnostic_reports": {
+      "name": "learning_diagnostic_reports",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "generated_by": {
+          "name": "generated_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "class_id": {
+          "name": "class_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grade_id": {
+          "name": "grade_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "report_type": {
+          "name": "report_type",
+          "type": "enum('individual','class','grade')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'individual'"
+        },
+        "period": {
+          "name": "period",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "summary": {
+          "name": "summary",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "strengths": {
+          "name": "strengths",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "weaknesses": {
+          "name": "weaknesses",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "recommendations": {
+          "name": "recommendations",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "overall_score": {
+          "name": "overall_score",
+          "type": "decimal(5,2)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "report_status": {
+          "name": "report_status",
+          "type": "enum('draft','published','archived')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'draft'"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "diagnostic_student_idx": {
+          "name": "diagnostic_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "diagnostic_generated_by_idx": {
+          "name": "diagnostic_generated_by_idx",
+          "columns": [
+            "generated_by"
+          ],
+          "isUnique": false
+        },
+        "diagnostic_status_idx": {
+          "name": "diagnostic_status_idx",
+          "columns": [
+            "report_status"
+          ],
+          "isUnique": false
+        },
+        "diagnostic_report_type_idx": {
+          "name": "diagnostic_report_type_idx",
+          "columns": [
+            "report_type"
+          ],
+          "isUnique": false
+        },
+        "diagnostic_class_idx": {
+          "name": "diagnostic_class_idx",
+          "columns": [
+            "class_id"
+          ],
+          "isUnique": false
+        },
+        "diagnostic_grade_idx": {
+          "name": "diagnostic_grade_idx",
+          "columns": [
+            "grade_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "learning_diagnostic_reports_student_id_users_id_fk": {
+          "name": "learning_diagnostic_reports_student_id_users_id_fk",
+          "tableFrom": "learning_diagnostic_reports",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "learning_diagnostic_reports_generated_by_users_id_fk": {
+          "name": "learning_diagnostic_reports_generated_by_users_id_fk",
+          "tableFrom": "learning_diagnostic_reports",
+          "tableTo": "users",
+          "columnsFrom": [
+            "generated_by"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        },
+        "learning_diagnostic_reports_class_id_classes_id_fk": {
+          "name": "learning_diagnostic_reports_class_id_classes_id_fk",
+          "tableFrom": "learning_diagnostic_reports",
+          "tableTo": "classes",
+          "columnsFrom": [
+            "class_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        },
+        "learning_diagnostic_reports_grade_id_grades_id_fk": {
+          "name": "learning_diagnostic_reports_grade_id_grades_id_fk",
+          "tableFrom": "learning_diagnostic_reports",
+          "tableTo": "grades",
+          "columnsFrom": [
+            "grade_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "set null",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "learning_diagnostic_reports_id": {
+          "name": "learning_diagnostic_reports_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "leave_requests": {
+      "name": "leave_requests",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "requester_id": {
+          "name": "requester_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "class_id": {
+          "name": "class_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "leave_type": {
+          "name": "leave_type",
+          "type": "enum('sick','personal','family','other')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "start_date": {
+          "name": "start_date",
+          "type": "date",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "end_date": {
+          "name": "end_date",
+          "type": "date",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reason": {
+          "name": "reason",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "leave_status": {
+          "name": "leave_status",
+          "type": "enum('pending','approved','rejected','cancelled')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "reviewer_id": {
+          "name": "reviewer_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "review_comment": {
+          "name": "review_comment",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "reviewed_at": {
+          "name": "reviewed_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "attendance_synced": {
+          "name": "attendance_synced",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "leave_requests_student_idx": {
+          "name": "leave_requests_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_requester_idx": {
+          "name": "leave_requests_requester_idx",
+          "columns": [
+            "requester_id"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_class_idx": {
+          "name": "leave_requests_class_idx",
+          "columns": [
+            "class_id"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_status_idx": {
+          "name": "leave_requests_status_idx",
+          "columns": [
+            "leave_status"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_reviewer_idx": {
+          "name": "leave_requests_reviewer_idx",
+          "columns": [
+            "reviewer_id"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_class_status_idx": {
+          "name": "leave_requests_class_status_idx",
+          "columns": [
+            "class_id",
+            "leave_status"
+          ],
+          "isUnique": false
+        },
+        "leave_requests_student_status_idx": {
+          "name": "leave_requests_student_status_idx",
+          "columns": [
+            "student_id",
+            "leave_status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "leave_requests_student_id_users_id_fk": {
+          "name": "leave_requests_student_id_users_id_fk",
+          "tableFrom": "leave_requests",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "leave_requests_requester_id_users_id_fk": {
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+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "lpfr_item_fk": {
+          "name": "lpfr_item_fk",
+          "tableFrom": "lesson_plan_formative_responses",
+          "tableTo": "lesson_plan_formative_items",
+          "columnsFrom": [
+            "item_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "lesson_plan_formative_responses_id": {
+          "name": "lesson_plan_formative_responses_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "lesson_plan_review_records": {
+      "name": "lesson_plan_review_records",
+      "columns": {
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+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
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+          "name": "plan_id",
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+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reviewer_id": {
+          "name": "reviewer_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "decision": {
+          "name": "decision",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "comment": {
+          "name": "comment",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "previous_status": {
+          "name": "previous_status",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "new_status": {
+          "name": "new_status",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
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+          "name": "lprr_plan_created_idx",
+          "columns": [
+            "plan_id",
+            "created_at"
+          ],
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+        },
+        "lprr_reviewer_idx": {
+          "name": "lprr_reviewer_idx",
+          "columns": [
+            "reviewer_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "lesson_plan_review_records_plan_id_lesson_plans_id_fk": {
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+          "tableFrom": "lesson_plan_review_records",
+          "tableTo": "lesson_plans",
+          "columnsFrom": [
+            "plan_id"
+          ],
+          "columnsTo": [
+            "id"
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+          "onUpdate": "no action"
+        },
+        "lesson_plan_review_records_reviewer_id_users_id_fk": {
+          "name": "lesson_plan_review_records_reviewer_id_users_id_fk",
+          "tableFrom": "lesson_plan_review_records",
+          "tableTo": "users",
+          "columnsFrom": [
+            "reviewer_id"
+          ],
+          "columnsTo": [
+            "id"
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+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
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+            "id"
+          ]
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+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "lesson_plan_standards": {
+      "name": "lesson_plan_standards",
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+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false
+        },
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+          "notNull": true,
+          "autoincrement": false
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+        "relation_type": {
+          "name": "relation_type",
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "'primary'"
+        },
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+          "notNull": true,
+          "autoincrement": false
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+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
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+            "standard_id"
+          ],
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+        },
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+          "columns": [
+            "standard_id"
+          ],
+          "isUnique": false
+        }
+      },
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+            "plan_id"
+          ],
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+          "onUpdate": "no action"
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+          "tableFrom": "lesson_plan_standards",
+          "tableTo": "standards",
+          "columnsFrom": [
+            "standard_id"
+          ],
+          "columnsTo": [
+            "id"
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+          "onDelete": "cascade",
+          "onUpdate": "no action"
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+        "lesson_plan_standards_created_by_users_id_fk": {
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+          "tableFrom": "lesson_plan_standards",
+          "tableTo": "users",
+          "columnsFrom": [
+            "created_by"
+          ],
+          "columnsTo": [
+            "id"
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+          "onDelete": "no action",
+          "onUpdate": "no action"
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+      },
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+          "name": "lesson_plan_standards_id",
+          "columns": [
+            "id"
+          ]
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+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "lesson_plan_substitutes": {
+      "name": "lesson_plan_substitutes",
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+          "type": "varchar(128)",
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+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false
+        },
+        "original_teacher_id": {
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+          "autoincrement": false
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+          "type": "varchar(128)",
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+          "notNull": true,
+          "autoincrement": false
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+          "name": "start_date",
+          "type": "date",
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+          "notNull": true,
+          "autoincrement": false
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+          "name": "end_date",
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+          "autoincrement": false
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+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "'active'"
+        },
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+          "notNull": true,
+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
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+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
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+        },
+        "lps_substitute_teacher_idx": {
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+          "columns": [
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+          "name": "lps_date_range_idx",
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+            "start_date",
+            "end_date"
+          ],
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+        }
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+            "plan_id"
+          ],
+          "columnsTo": [
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+          "onDelete": "cascade",
+          "onUpdate": "no action"
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+        "lesson_plan_substitutes_original_teacher_id_users_id_fk": {
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+          "columnsFrom": [
+            "original_teacher_id"
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+          "columnsTo": [
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+          "onDelete": "no action",
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+          "tableTo": "users",
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+            "substitute_teacher_id"
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+          "columnsTo": [
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+          "onDelete": "no action",
+          "onUpdate": "no action"
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+        "lesson_plan_substitutes_created_by_users_id_fk": {
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+          "tableTo": "users",
+          "columnsFrom": [
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+          "onDelete": "no action",
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+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
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+      "name": "lesson_plan_templates",
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+          "notNull": true,
+          "autoincrement": false
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+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false
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+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
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+          "type": "json",
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+          "autoincrement": false
+        },
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+          "notNull": false,
+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
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+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
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+          "name": "lpt_type_creator_idx",
+          "columns": [
+            "type",
+            "creator_id"
+          ],
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+        }
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+      "foreignKeys": {
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+          "tableTo": "users",
+          "columnsFrom": [
+            "creator_id"
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+          "onDelete": "no action",
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+          "columns": [
+            "id"
+          ]
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+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
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+      "name": "lesson_plan_versions",
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+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
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+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
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+          "name": "version_no",
+          "type": "int",
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+          "autoincrement": false
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+          "autoincrement": false
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+          "notNull": true,
+          "autoincrement": false
+        },
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+          "notNull": true,
+          "autoincrement": false,
+          "default": false
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+          "autoincrement": false
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+          "type": "timestamp",
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
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+        },
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+            "plan_id",
+            "created_at"
+          ],
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+        }
+      },
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+          "tableTo": "lesson_plans",
+          "columnsFrom": [
+            "plan_id"
+          ],
+          "columnsTo": [
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+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "lesson_plan_versions_creator_id_users_id_fk": {
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+          "tableFrom": "lesson_plan_versions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "creator_id"
+          ],
+          "columnsTo": [
+            "id"
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+          "onDelete": "no action",
+          "onUpdate": "no action"
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+      },
+      "compositePrimaryKeys": {
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+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "lesson_plans": {
+      "name": "lesson_plans",
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+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
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+          "autoincrement": false
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+          "autoincrement": false
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+          "notNull": false,
+          "autoincrement": false
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+          "notNull": false,
+          "autoincrement": false
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+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
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+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
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+          "notNull": false,
+          "autoincrement": false
+        },
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+          "primaryKey": false,
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+          "autoincrement": false
+        },
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+          "autoincrement": false
+        },
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+          "name": "status",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'draft'"
+        },
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+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
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+          "name": "last_saved_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
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+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
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+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
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+          "name": "lp_creator_idx",
+          "columns": [
+            "creator_id"
+          ],
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+        },
+        "lp_status_idx": {
+          "name": "lp_status_idx",
+          "columns": [
+            "status"
+          ],
+          "isUnique": false
+        },
+        "lp_textbook_chapter_idx": {
+          "name": "lp_textbook_chapter_idx",
+          "columns": [
+            "textbook_id",
+            "chapter_id"
+          ],
+          "isUnique": false
+        },
+        "lp_subject_grade_idx": {
+          "name": "lp_subject_grade_idx",
+          "columns": [
+            "subject_id",
+            "grade_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "lesson_plans_textbook_id_textbooks_id_fk": {
+          "name": "lesson_plans_textbook_id_textbooks_id_fk",
+          "tableFrom": "lesson_plans",
+          "tableTo": "textbooks",
+          "columnsFrom": [
+            "textbook_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "lesson_plans_chapter_id_chapters_id_fk": {
+          "name": "lesson_plans_chapter_id_chapters_id_fk",
+          "tableFrom": "lesson_plans",
+          "tableTo": "chapters",
+          "columnsFrom": [
+            "chapter_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "lesson_plans_subject_id_subjects_id_fk": {
+          "name": "lesson_plans_subject_id_subjects_id_fk",
+          "tableFrom": "lesson_plans",
+          "tableTo": "subjects",
+          "columnsFrom": [
+            "subject_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "lesson_plans_grade_id_grades_id_fk": {
+          "name": "lesson_plans_grade_id_grades_id_fk",
+          "tableFrom": "lesson_plans",
+          "tableTo": "grades",
+          "columnsFrom": [
+            "grade_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "lesson_plans_creator_id_users_id_fk": {
+          "name": "lesson_plans_creator_id_users_id_fk",
+          "tableFrom": "lesson_plans",
+          "tableTo": "users",
+          "columnsFrom": [
+            "creator_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "lesson_plans_id": {
+          "name": "lesson_plans_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "login_logs": {
       "name": "login_logs",
       "columns": {
@@ -3982,6 +8225,148 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "message_drafts": {
+      "name": "message_drafts",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "receiver_id": {
+          "name": "receiver_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "subject": {
+          "name": "subject",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "parent_message_id": {
+          "name": "parent_message_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "device_id": {
+          "name": "device_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "version": {
+          "name": "version",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 1
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "message_drafts_user_idx": {
+          "name": "message_drafts_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        },
+        "message_drafts_user_updated_idx": {
+          "name": "message_drafts_user_updated_idx",
+          "columns": [
+            "user_id",
+            "updated_at"
+          ],
+          "isUnique": false
+        },
+        "message_drafts_user_parent_idx": {
+          "name": "message_drafts_user_parent_idx",
+          "columns": [
+            "user_id",
+            "parent_message_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "message_drafts_user_id_users_id_fk": {
+          "name": "message_drafts_user_id_users_id_fk",
+          "tableFrom": "message_drafts",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "message_drafts_receiver_id_users_id_fk": {
+          "name": "message_drafts_receiver_id_users_id_fk",
+          "tableFrom": "message_drafts",
+          "tableTo": "users",
+          "columnsFrom": [
+            "receiver_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "message_drafts_id": {
+          "name": "message_drafts_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "message_notifications": {
       "name": "message_notifications",
       "columns": {
@@ -4035,6 +8420,22 @@
           "autoincrement": false,
           "default": false
         },
+        "priority": {
+          "name": "priority",
+          "type": "varchar(16)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'normal'"
+        },
+        "is_archived": {
+          "name": "is_archived",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -4073,6 +8474,21 @@
             "created_at"
           ],
           "isUnique": false
+        },
+        "message_notifications_priority_idx": {
+          "name": "message_notifications_priority_idx",
+          "columns": [
+            "priority"
+          ],
+          "isUnique": false
+        },
+        "message_notifications_user_archived_idx": {
+          "name": "message_notifications_user_archived_idx",
+          "columns": [
+            "user_id",
+            "is_archived"
+          ],
+          "isUnique": false
         }
       },
       "foreignKeys": {
@@ -4101,6 +8517,259 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "message_reports": {
+      "name": "message_reports",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reporter_id": {
+          "name": "reporter_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "message_id": {
+          "name": "message_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reported_user_id": {
+          "name": "reported_user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "reason": {
+          "name": "reason",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "message_reports_reporter_idx": {
+          "name": "message_reports_reporter_idx",
+          "columns": [
+            "reporter_id"
+          ],
+          "isUnique": false
+        },
+        "message_reports_message_idx": {
+          "name": "message_reports_message_idx",
+          "columns": [
+            "message_id"
+          ],
+          "isUnique": false
+        },
+        "message_reports_reported_user_idx": {
+          "name": "message_reports_reported_user_idx",
+          "columns": [
+            "reported_user_id"
+          ],
+          "isUnique": false
+        },
+        "message_reports_status_idx": {
+          "name": "message_reports_status_idx",
+          "columns": [
+            "status"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "message_reports_reporter_id_users_id_fk": {
+          "name": "message_reports_reporter_id_users_id_fk",
+          "tableFrom": "message_reports",
+          "tableTo": "users",
+          "columnsFrom": [
+            "reporter_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "message_reports_message_id_messages_id_fk": {
+          "name": "message_reports_message_id_messages_id_fk",
+          "tableFrom": "message_reports",
+          "tableTo": "messages",
+          "columnsFrom": [
+            "message_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "message_reports_reported_user_id_users_id_fk": {
+          "name": "message_reports_reported_user_id_users_id_fk",
+          "tableFrom": "message_reports",
+          "tableTo": "users",
+          "columnsFrom": [
+            "reported_user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "message_reports_id": {
+          "name": "message_reports_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "message_templates": {
+      "name": "message_templates",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "sort_order": {
+          "name": "sort_order",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "message_templates_user_idx": {
+          "name": "message_templates_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        },
+        "message_templates_user_sort_idx": {
+          "name": "message_templates_user_sort_idx",
+          "columns": [
+            "user_id",
+            "sort_order"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "message_templates_user_id_users_id_fk": {
+          "name": "message_templates_user_id_users_id_fk",
+          "tableFrom": "message_templates",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "message_templates_id": {
+          "name": "message_templates_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "messages": {
       "name": "messages",
       "columns": {
@@ -4161,6 +8830,42 @@
           "notNull": false,
           "autoincrement": false
         },
+        "sender_deleted_at": {
+          "name": "sender_deleted_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "receiver_deleted_at": {
+          "name": "receiver_deleted_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "is_starred": {
+          "name": "is_starred",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "recalled_at": {
+          "name": "recalled_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "group_message_id": {
+          "name": "group_message_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -4206,6 +8911,21 @@
             "is_read"
           ],
           "isUnique": false
+        },
+        "messages_receiver_starred_idx": {
+          "name": "messages_receiver_starred_idx",
+          "columns": [
+            "receiver_id",
+            "is_starred"
+          ],
+          "isUnique": false
+        },
+        "messages_group_message_idx": {
+          "name": "messages_group_message_idx",
+          "columns": [
+            "group_message_id"
+          ],
+          "isUnique": false
         }
       },
       "foreignKeys": {
@@ -4247,6 +8967,123 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "notification_logs": {
+      "name": "notification_logs",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "channel": {
+          "name": "channel",
+          "type": "varchar(32)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "varchar(16)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "message_id": {
+          "name": "message_id",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error": {
+          "name": "error",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sent_at": {
+          "name": "sent_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "notification_logs_user_idx": {
+          "name": "notification_logs_user_idx",
+          "columns": [
+            "user_id"
+          ],
+          "isUnique": false
+        },
+        "notification_logs_channel_idx": {
+          "name": "notification_logs_channel_idx",
+          "columns": [
+            "channel"
+          ],
+          "isUnique": false
+        },
+        "notification_logs_status_idx": {
+          "name": "notification_logs_status_idx",
+          "columns": [
+            "status"
+          ],
+          "isUnique": false
+        },
+        "notification_logs_sent_at_idx": {
+          "name": "notification_logs_sent_at_idx",
+          "columns": [
+            "sent_at"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "notification_logs_user_id_users_id_fk": {
+          "name": "notification_logs_user_id_users_id_fk",
+          "tableFrom": "notification_logs",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "notification_logs_id": {
+          "name": "notification_logs_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "notification_preferences": {
       "name": "notification_preferences",
       "columns": {
@@ -4328,6 +9165,28 @@
           "autoincrement": false,
           "default": true
         },
+        "quiet_hours_enabled": {
+          "name": "quiet_hours_enabled",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "quiet_hours_start": {
+          "name": "quiet_hours_start",
+          "type": "varchar(5)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "quiet_hours_end": {
+          "name": "quiet_hours_end",
+          "type": "varchar(5)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -4650,6 +9509,357 @@
       },
       "checkConstraint": {}
     },
+    "practice_answers": {
+      "name": "practice_answers",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "session_id": {
+          "name": "session_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "question_id": {
+          "name": "question_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "variant_content": {
+          "name": "variant_content",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "is_variant": {
+          "name": "is_variant",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "order_index": {
+          "name": "order_index",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "practice_answer_status": {
+          "name": "practice_answer_status",
+          "type": "enum('pending','answered','skipped')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'pending'"
+        },
+        "student_answer": {
+          "name": "student_answer",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "is_correct": {
+          "name": "is_correct",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "score": {
+          "name": "score",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "max_score": {
+          "name": "max_score",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 1
+        },
+        "answered_at": {
+          "name": "answered_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "pa_session_idx": {
+          "name": "pa_session_idx",
+          "columns": [
+            "session_id"
+          ],
+          "isUnique": false
+        },
+        "pa_student_idx": {
+          "name": "pa_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "pa_question_idx": {
+          "name": "pa_question_idx",
+          "columns": [
+            "question_id"
+          ],
+          "isUnique": false
+        },
+        "pa_session_order_idx": {
+          "name": "pa_session_order_idx",
+          "columns": [
+            "session_id",
+            "order_index"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "practice_answers_session_id_practice_sessions_id_fk": {
+          "name": "practice_answers_session_id_practice_sessions_id_fk",
+          "tableFrom": "practice_answers",
+          "tableTo": "practice_sessions",
+          "columnsFrom": [
+            "session_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "practice_answers_student_id_users_id_fk": {
+          "name": "practice_answers_student_id_users_id_fk",
+          "tableFrom": "practice_answers",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "practice_answers_question_id_questions_id_fk": {
+          "name": "practice_answers_question_id_questions_id_fk",
+          "tableFrom": "practice_answers",
+          "tableTo": "questions",
+          "columnsFrom": [
+            "question_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "practice_answers_id": {
+          "name": "practice_answers_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
+    "practice_sessions": {
+      "name": "practice_sessions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "student_id": {
+          "name": "student_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "subject_id": {
+          "name": "subject_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "practice_type": {
+          "name": "practice_type",
+          "type": "enum('error_variant','knowledge_point','weak_chapter','ai_recommended')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "source_meta": {
+          "name": "source_meta",
+          "type": "json",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "practice_status": {
+          "name": "practice_status",
+          "type": "enum('in_progress','completed','abandoned')",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'in_progress'"
+        },
+        "total_questions": {
+          "name": "total_questions",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "answered_questions": {
+          "name": "answered_questions",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "correct_count": {
+          "name": "correct_count",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "started_at": {
+          "name": "started_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "completed_at": {
+          "name": "completed_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "ps_student_idx": {
+          "name": "ps_student_idx",
+          "columns": [
+            "student_id"
+          ],
+          "isUnique": false
+        },
+        "ps_student_status_idx": {
+          "name": "ps_student_status_idx",
+          "columns": [
+            "student_id",
+            "practice_status"
+          ],
+          "isUnique": false
+        },
+        "ps_subject_idx": {
+          "name": "ps_subject_idx",
+          "columns": [
+            "subject_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "practice_sessions_student_id_users_id_fk": {
+          "name": "practice_sessions_student_id_users_id_fk",
+          "tableFrom": "practice_sessions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "student_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "practice_sessions_id": {
+          "name": "practice_sessions_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "questions": {
       "name": "questions",
       "columns": {
@@ -4901,6 +10111,22 @@
           "notNull": false,
           "autoincrement": false
         },
+        "is_system": {
+          "name": "is_system",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "is_enabled": {
+          "name": "is_enabled",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
         "created_at": {
           "name": "created_at",
           "type": "timestamp",
@@ -5357,6 +10583,196 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "standards": {
+      "name": "standards",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "code": {
+          "name": "code",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "varchar(255)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "level": {
+          "name": "level",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "parent_id": {
+          "name": "parent_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "subject_id": {
+          "name": "subject_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grade_id": {
+          "name": "grade_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "stage": {
+          "name": "stage",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sort_order": {
+          "name": "sort_order",
+          "type": "int",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "is_active": {
+          "name": "is_active",
+          "type": "boolean",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "created_by": {
+          "name": "created_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "std_code_idx": {
+          "name": "std_code_idx",
+          "columns": [
+            "code"
+          ],
+          "isUnique": true
+        },
+        "std_parent_idx": {
+          "name": "std_parent_idx",
+          "columns": [
+            "parent_id"
+          ],
+          "isUnique": false
+        },
+        "std_subject_grade_idx": {
+          "name": "std_subject_grade_idx",
+          "columns": [
+            "subject_id",
+            "grade_id"
+          ],
+          "isUnique": false
+        },
+        "std_level_idx": {
+          "name": "std_level_idx",
+          "columns": [
+            "level"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "standards_subject_id_subjects_id_fk": {
+          "name": "standards_subject_id_subjects_id_fk",
+          "tableFrom": "standards",
+          "tableTo": "subjects",
+          "columnsFrom": [
+            "subject_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "standards_grade_id_grades_id_fk": {
+          "name": "standards_grade_id_grades_id_fk",
+          "tableFrom": "standards",
+          "tableTo": "grades",
+          "columnsFrom": [
+            "grade_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "standards_created_by_users_id_fk": {
+          "name": "standards_created_by_users_id_fk",
+          "tableFrom": "standards",
+          "tableTo": "users",
+          "columnsFrom": [
+            "created_by"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "standards_id": {
+          "name": "standards_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "subjects": {
       "name": "subjects",
       "columns": {
@@ -5552,6 +10968,99 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "system_settings": {
+      "name": "system_settings",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "category": {
+          "name": "category",
+          "type": "varchar(50)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "key": {
+          "name": "key",
+          "type": "varchar(100)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value": {
+          "name": "value",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value_type": {
+          "name": "value_type",
+          "type": "varchar(20)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'string'"
+        },
+        "updated_by": {
+          "name": "updated_by",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "onUpdate": true,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "ss_category_key_idx": {
+          "name": "ss_category_key_idx",
+          "columns": [
+            "category",
+            "key"
+          ],
+          "isUnique": true
+        },
+        "ss_category_idx": {
+          "name": "ss_category_idx",
+          "columns": [
+            "category"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {
+        "system_settings_id": {
+          "name": "system_settings_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "textbooks": {
       "name": "textbooks",
       "columns": {
@@ -5621,6 +11130,95 @@
       "uniqueConstraints": {},
       "checkConstraint": {}
     },
+    "user_blocks": {
+      "name": "user_blocks",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "blocker_id": {
+          "name": "blocker_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "blocked_id": {
+          "name": "blocked_id",
+          "type": "varchar(128)",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamp",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "(now())"
+        }
+      },
+      "indexes": {
+        "user_blocks_blocker_blocked_uniq": {
+          "name": "user_blocks_blocker_blocked_uniq",
+          "columns": [
+            "blocker_id",
+            "blocked_id"
+          ],
+          "isUnique": true
+        },
+        "user_blocks_blocker_idx": {
+          "name": "user_blocks_blocker_idx",
+          "columns": [
+            "blocker_id"
+          ],
+          "isUnique": false
+        }
+      },
+      "foreignKeys": {
+        "user_blocks_blocker_id_users_id_fk": {
+          "name": "user_blocks_blocker_id_users_id_fk",
+          "tableFrom": "user_blocks",
+          "tableTo": "users",
+          "columnsFrom": [
+            "blocker_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        },
+        "user_blocks_blocked_id_users_id_fk": {
+          "name": "user_blocks_blocked_id_users_id_fk",
+          "tableFrom": "user_blocks",
+          "tableTo": "users",
+          "columnsFrom": [
+            "blocked_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "cascade",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {
+        "user_blocks_id": {
+          "name": "user_blocks_id",
+          "columns": [
+            "id"
+          ]
+        }
+      },
+      "uniqueConstraints": {},
+      "checkConstraint": {}
+    },
     "users": {
       "name": "users",
       "columns": {
diff --git a/drizzle/meta/0001_snapshot.json b/drizzle/meta/0001_snapshot.json
deleted file mode 100644
index 27c8a70..0000000
--- a/drizzle/meta/0001_snapshot.json
+++ /dev/null
@@ -1,6809 +0,0 @@
-{
-  "version": "5",
-  "dialect": "mysql",
-  "id": "ce4890dc-330e-4599-b6df-b659f40e63f8",
-  "prevId": "0ec4760a-6847-43de-8c01-13cb9676df8c",
-  "tables": {
-    "academic_years": {
-      "name": "academic_years",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "start_date": {
-          "name": "start_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "end_date": {
-          "name": "end_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "is_active": {
-          "name": "is_active",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "academic_years_name_idx": {
-          "name": "academic_years_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        },
-        "academic_years_active_idx": {
-          "name": "academic_years_active_idx",
-          "columns": [
-            "is_active"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "academic_years_id": {
-          "name": "academic_years_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "academic_years_name_unique": {
-          "name": "academic_years_name_unique",
-          "columns": [
-            "name"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "accounts": {
-      "name": "accounts",
-      "columns": {
-        "userId": {
-          "name": "userId",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "providerAccountId": {
-          "name": "providerAccountId",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "refresh_token": {
-          "name": "refresh_token",
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-}
\ No newline at end of file
diff --git a/drizzle/meta/0002_snapshot.json b/drizzle/meta/0002_snapshot.json
deleted file mode 100644
index 427fb03..0000000
--- a/drizzle/meta/0002_snapshot.json
+++ /dev/null
@@ -1,7250 +0,0 @@
-{
-  "version": "5",
-  "dialect": "mysql",
-  "id": "f2b1af65-541e-41c5-9393-a5087fa3ca5f",
-  "prevId": "ce4890dc-330e-4599-b6df-b659f40e63f8",
-  "tables": {
-    "academic_years": {
-      "name": "academic_years",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "start_date": {
-          "name": "start_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "end_date": {
-          "name": "end_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "is_active": {
-          "name": "is_active",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "academic_years_name_idx": {
-          "name": "academic_years_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        },
-        "academic_years_active_idx": {
-          "name": "academic_years_active_idx",
-          "columns": [
-            "is_active"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "academic_years_id": {
-          "name": "academic_years_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "academic_years_name_unique": {
-          "name": "academic_years_name_unique",
-          "columns": [
-            "name"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "accounts": {
-      "name": "accounts",
-      "columns": {
-        "userId": {
-          "name": "userId",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "providerAccountId": {
-          "name": "providerAccountId",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "refresh_token": {
-          "name": "refresh_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "access_token": {
-          "name": "access_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "expires_at": {
-          "name": "expires_at",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "token_type": {
-          "name": "token_type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "scope": {
-          "name": "scope",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "id_token": {
-          "name": "id_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "session_state": {
-          "name": "session_state",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "account_userId_idx": {
-          "name": "account_userId_idx",
-          "columns": [
-            "userId"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "accounts_userId_users_id_fk": {
-          "name": "accounts_userId_users_id_fk",
-          "tableFrom": "accounts",
-          "tableTo": "users",
-          "columnsFrom": [
-            "userId"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "accounts_provider_providerAccountId_pk": {
-          "name": "accounts_provider_providerAccountId_pk",
-          "columns": [
-            "provider",
-            "providerAccountId"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "ai_providers": {
-      "name": "ai_providers",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "enum('zhipu','openai','gemini','custom')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "base_url": {
-          "name": "base_url",
-          "type": "varchar(512)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "model": {
-          "name": "model",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "api_key_encrypted": {
-          "name": "api_key_encrypted",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "api_key_last4": {
-          "name": "api_key_last4",
-          "type": "varchar(4)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "is_default": {
-          "name": "is_default",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_by": {
-          "name": "created_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "updated_by": {
-          "name": "updated_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "ai_provider_idx": {
-          "name": "ai_provider_idx",
-          "columns": [
-            "provider"
-          ],
-          "isUnique": false
-        },
-        "ai_provider_default_idx": {
-          "name": "ai_provider_default_idx",
-          "columns": [
-            "is_default"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "ai_providers_id": {
-          "name": "ai_providers_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "announcements": {
-      "name": "announcements",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "title": {
-          "name": "title",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "content": {
-          "name": "content",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "enum('school','grade','class')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "'school'"
-        },
-        "status": {
-          "name": "status",
-          "type": "enum('draft','published','archived')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "'draft'"
-        },
-        "target_grade_id": {
-          "name": "target_grade_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "target_class_id": {
-          "name": "target_class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "author_id": {
-          "name": "author_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "published_at": {
-          "name": "published_at",
-          "type": "datetime",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "announcements_author_idx": {
-          "name": "announcements_author_idx",
-          "columns": [
-            "author_id"
-          ],
-          "isUnique": false
-        },
-        "announcements_status_idx": {
-          "name": "announcements_status_idx",
-          "columns": [
-            "status"
-          ],
-          "isUnique": false
-        },
-        "announcements_type_idx": {
-          "name": "announcements_type_idx",
-          "columns": [
-            "type"
-          ],
-          "isUnique": false
-        },
-        "announcements_target_grade_idx": {
-          "name": "announcements_target_grade_idx",
-          "columns": [
-            "target_grade_id"
-          ],
-          "isUnique": false
-        },
-        "announcements_target_class_idx": {
-          "name": "announcements_target_class_idx",
-          "columns": [
-            "target_class_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "announcements_author_id_users_id_fk": {
-          "name": "announcements_author_id_users_id_fk",
-          "tableFrom": "announcements",
-          "tableTo": "users",
-          "columnsFrom": [
-            "author_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "no action",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "announcements_id": {
-          "name": "announcements_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "attendance_records": {
-      "name": "attendance_records",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "student_id": {
-          "name": "student_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "class_id": {
-          "name": "class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "schedule_id": {
-          "name": "schedule_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "date": {
-          "name": "date",
-          "type": "date",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "status": {
-          "name": "status",
-          "type": "enum('present','absent','late','early_leave','excused')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "remark": {
-          "name": "remark",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "recorded_by": {
-          "name": "recorded_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "attendance_records_student_idx": {
-          "name": "attendance_records_student_idx",
-          "columns": [
-            "student_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_class_idx": {
-          "name": "attendance_records_class_idx",
-          "columns": [
-            "class_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_date_idx": {
-          "name": "attendance_records_date_idx",
-          "columns": [
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_class_date_idx": {
-          "name": "attendance_records_class_date_idx",
-          "columns": [
-            "class_id",
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_student_date_idx": {
-          "name": "attendance_records_student_date_idx",
-          "columns": [
-            "student_id",
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_schedule_idx": {
-          "name": "attendance_records_schedule_idx",
-          "columns": [
-            "schedule_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_recorded_by_idx": {
-          "name": "attendance_records_recorded_by_idx",
-          "columns": [
-            "recorded_by"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "attendance_records_student_id_users_id_fk": {
-          "name": "attendance_records_student_id_users_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "student_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "attendance_records_class_id_classes_id_fk": {
-          "name": "attendance_records_class_id_classes_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "attendance_records_recorded_by_users_id_fk": {
-          "name": "attendance_records_recorded_by_users_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "recorded_by"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_c_fk": {
-          "name": "ar_c_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_s_fk": {
-          "name": "ar_s_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "student_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_rb_fk": {
-          "name": "ar_rb_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "recorded_by"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "attendance_records_id": {
-          "name": "attendance_records_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "attendance_rules": {
-      "name": "attendance_rules",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "class_id": {
-          "name": "class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "late_threshold_minutes": {
-          "name": "late_threshold_minutes",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 15
-        },
-        "early_leave_threshold_minutes": {
-          "name": "early_leave_threshold_minutes",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 15
-        },
-        "enable_auto_mark": {
-          "name": "enable_auto_mark",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "attendance_rules_class_idx": {
-          "name": "attendance_rules_class_idx",
-          "columns": [
-            "class_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "attendance_rules_class_id_classes_id_fk": {
-          "name": "attendance_rules_class_id_classes_id_fk",
-          "tableFrom": "attendance_rules",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "atr_c_fk": {
-          "name": "atr_c_fk",
-          "tableFrom": "attendance_rules",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "attendance_rules_id": {
-          "name": "attendance_rules_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "audit_logs": {
-      "name": "audit_logs",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "user_id": {
-          "name": "user_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
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-        "expires": {
-          "name": "expires",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "session_userId_idx": {
-          "name": "session_userId_idx",
-          "columns": [
-            "userId"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "sessions_userId_users_id_fk": {
-          "name": "sessions_userId_users_id_fk",
-          "tableFrom": "sessions",
-          "tableTo": "users",
-          "columnsFrom": [
-            "userId"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "sessions_sessionToken": {
-          "name": "sessions_sessionToken",
-          "columns": [
-            "sessionToken"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "subjects": {
-      "name": "subjects",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "code": {
-          "name": "code",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "order": {
-          "name": "order",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 0
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "subjects_name_idx": {
-          "name": "subjects_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "subjects_id": {
-          "name": "subjects_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "subjects_name_unique": {
-          "name": "subjects_name_unique",
-          "columns": [
-            "name"
-          ]
-        },
-        "subjects_code_unique": {
-          "name": "subjects_code_unique",
-          "columns": [
-            "code"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "submission_answers": {
-      "name": "submission_answers",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "submission_id": {
-          "name": "submission_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "question_id": {
-          "name": "question_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "answer_content": {
-          "name": "answer_content",
-          "type": "json",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "score": {
-          "name": "score",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "feedback": {
-          "name": "feedback",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "submission_idx": {
-          "name": "submission_idx",
-          "columns": [
-            "submission_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "submission_answers_submission_id_exam_submissions_id_fk": {
-          "name": "submission_answers_submission_id_exam_submissions_id_fk",
-          "tableFrom": "submission_answers",
-          "tableTo": "exam_submissions",
-          "columnsFrom": [
-            "submission_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "submission_answers_question_id_questions_id_fk": {
-          "name": "submission_answers_question_id_questions_id_fk",
-          "tableFrom": "submission_answers",
-          "tableTo": "questions",
-          "columnsFrom": [
-            "question_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "no action",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "submission_answers_id": {
-          "name": "submission_answers_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "textbooks": {
-      "name": "textbooks",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "title": {
-          "name": "title",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "subject": {
-          "name": "subject",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "grade": {
-          "name": "grade",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "publisher": {
-          "name": "publisher",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {},
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "textbooks_id": {
-          "name": "textbooks_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "users": {
-      "name": "users",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "email": {
-          "name": "email",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "emailVerified": {
-          "name": "emailVerified",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "image": {
-          "name": "image",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "password": {
-          "name": "password",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "phone": {
-          "name": "phone",
-          "type": "varchar(30)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "address": {
-          "name": "address",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "gender": {
-          "name": "gender",
-          "type": "varchar(20)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "age": {
-          "name": "age",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "grade_id": {
-          "name": "grade_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "department_id": {
-          "name": "department_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "onboarded_at": {
-          "name": "onboarded_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "birth_date": {
-          "name": "birth_date",
-          "type": "date",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_name": {
-          "name": "guardian_name",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_phone": {
-          "name": "guardian_phone",
-          "type": "varchar(20)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_relation": {
-          "name": "guardian_relation",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "consent_accepted_at": {
-          "name": "consent_accepted_at",
-          "type": "datetime",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "email_idx": {
-          "name": "email_idx",
-          "columns": [
-            "email"
-          ],
-          "isUnique": false
-        },
-        "users_grade_id_idx": {
-          "name": "users_grade_id_idx",
-          "columns": [
-            "grade_id"
-          ],
-          "isUnique": false
-        },
-        "users_department_id_idx": {
-          "name": "users_department_id_idx",
-          "columns": [
-            "department_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "users_id": {
-          "name": "users_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "users_email_unique": {
-          "name": "users_email_unique",
-          "columns": [
-            "email"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "users_to_roles": {
-      "name": "users_to_roles",
-      "columns": {
-        "user_id": {
-          "name": "user_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "role_id": {
-          "name": "role_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "user_id_idx": {
-          "name": "user_id_idx",
-          "columns": [
-            "user_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "users_to_roles_user_id_users_id_fk": {
-          "name": "users_to_roles_user_id_users_id_fk",
-          "tableFrom": "users_to_roles",
-          "tableTo": "users",
-          "columnsFrom": [
-            "user_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "users_to_roles_role_id_roles_id_fk": {
-          "name": "users_to_roles_role_id_roles_id_fk",
-          "tableFrom": "users_to_roles",
-          "tableTo": "roles",
-          "columnsFrom": [
-            "role_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "users_to_roles_user_id_role_id_pk": {
-          "name": "users_to_roles_user_id_role_id_pk",
-          "columns": [
-            "user_id",
-            "role_id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "verificationTokens": {
-      "name": "verificationTokens",
-      "columns": {
-        "identifier": {
-          "name": "identifier",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "token": {
-          "name": "token",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "expires": {
-          "name": "expires",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        }
-      },
-      "indexes": {},
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "verificationTokens_identifier_token_pk": {
-          "name": "verificationTokens_identifier_token_pk",
-          "columns": [
-            "identifier",
-            "token"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    }
-  },
-  "views": {},
-  "_meta": {
-    "schemas": {},
-    "tables": {},
-    "columns": {}
-  },
-  "internal": {
-    "tables": {},
-    "indexes": {}
-  }
-}
\ No newline at end of file
diff --git a/drizzle/meta/0003_snapshot.json b/drizzle/meta/0003_snapshot.json
deleted file mode 100644
index 675074f..0000000
--- a/drizzle/meta/0003_snapshot.json
+++ /dev/null
@@ -1,7562 +0,0 @@
-{
-  "version": "5",
-  "dialect": "mysql",
-  "id": "6fe72813-5ec3-4b06-a7d1-a475e3a06ddf",
-  "prevId": "f2b1af65-541e-41c5-9393-a5087fa3ca5f",
-  "tables": {
-    "academic_years": {
-      "name": "academic_years",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "start_date": {
-          "name": "start_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "end_date": {
-          "name": "end_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "is_active": {
-          "name": "is_active",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "academic_years_name_idx": {
-          "name": "academic_years_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        },
-        "academic_years_active_idx": {
-          "name": "academic_years_active_idx",
-          "columns": [
-            "is_active"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "academic_years_id": {
-          "name": "academic_years_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "academic_years_name_unique": {
-          "name": "academic_years_name_unique",
-          "columns": [
-            "name"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "accounts": {
-      "name": "accounts",
-      "columns": {
-        "userId": {
-          "name": "userId",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "providerAccountId": {
-          "name": "providerAccountId",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "refresh_token": {
-          "name": "refresh_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "access_token": {
-          "name": "access_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "expires_at": {
-          "name": "expires_at",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "token_type": {
-          "name": "token_type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "scope": {
-          "name": "scope",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "id_token": {
-          "name": "id_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "session_state": {
-          "name": "session_state",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "account_userId_idx": {
-          "name": "account_userId_idx",
-          "columns": [
-            "userId"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "accounts_userId_users_id_fk": {
-          "name": "accounts_userId_users_id_fk",
-          "tableFrom": "accounts",
-          "tableTo": "users",
-          "columnsFrom": [
-            "userId"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "accounts_provider_providerAccountId_pk": {
-          "name": "accounts_provider_providerAccountId_pk",
-          "columns": [
-            "provider",
-            "providerAccountId"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "ai_providers": {
-      "name": "ai_providers",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
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-          "name": "session_userId_idx",
-          "columns": [
-            "userId"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "sessions_userId_users_id_fk": {
-          "name": "sessions_userId_users_id_fk",
-          "tableFrom": "sessions",
-          "tableTo": "users",
-          "columnsFrom": [
-            "userId"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "sessions_sessionToken": {
-          "name": "sessions_sessionToken",
-          "columns": [
-            "sessionToken"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "subjects": {
-      "name": "subjects",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "code": {
-          "name": "code",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "order": {
-          "name": "order",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 0
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "subjects_name_idx": {
-          "name": "subjects_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "subjects_id": {
-          "name": "subjects_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "subjects_name_unique": {
-          "name": "subjects_name_unique",
-          "columns": [
-            "name"
-          ]
-        },
-        "subjects_code_unique": {
-          "name": "subjects_code_unique",
-          "columns": [
-            "code"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "submission_answers": {
-      "name": "submission_answers",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "submission_id": {
-          "name": "submission_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "question_id": {
-          "name": "question_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "answer_content": {
-          "name": "answer_content",
-          "type": "json",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "score": {
-          "name": "score",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "feedback": {
-          "name": "feedback",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "submission_idx": {
-          "name": "submission_idx",
-          "columns": [
-            "submission_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "submission_answers_submission_id_exam_submissions_id_fk": {
-          "name": "submission_answers_submission_id_exam_submissions_id_fk",
-          "tableFrom": "submission_answers",
-          "tableTo": "exam_submissions",
-          "columnsFrom": [
-            "submission_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "submission_answers_question_id_questions_id_fk": {
-          "name": "submission_answers_question_id_questions_id_fk",
-          "tableFrom": "submission_answers",
-          "tableTo": "questions",
-          "columnsFrom": [
-            "question_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "no action",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "submission_answers_id": {
-          "name": "submission_answers_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "system_settings": {
-      "name": "system_settings",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "category": {
-          "name": "category",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "key": {
-          "name": "key",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "value": {
-          "name": "value",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "value_type": {
-          "name": "value_type",
-          "type": "varchar(20)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "'string'"
-        },
-        "updated_by": {
-          "name": "updated_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "ss_category_key_idx": {
-          "name": "ss_category_key_idx",
-          "columns": [
-            "category",
-            "key"
-          ],
-          "isUnique": true
-        },
-        "ss_category_idx": {
-          "name": "ss_category_idx",
-          "columns": [
-            "category"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "system_settings_id": {
-          "name": "system_settings_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "textbooks": {
-      "name": "textbooks",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "title": {
-          "name": "title",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "subject": {
-          "name": "subject",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "grade": {
-          "name": "grade",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "publisher": {
-          "name": "publisher",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {},
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "textbooks_id": {
-          "name": "textbooks_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "users": {
-      "name": "users",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "email": {
-          "name": "email",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "emailVerified": {
-          "name": "emailVerified",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "image": {
-          "name": "image",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "password": {
-          "name": "password",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "phone": {
-          "name": "phone",
-          "type": "varchar(30)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "address": {
-          "name": "address",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "gender": {
-          "name": "gender",
-          "type": "varchar(20)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "age": {
-          "name": "age",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "grade_id": {
-          "name": "grade_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "department_id": {
-          "name": "department_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "onboarded_at": {
-          "name": "onboarded_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "birth_date": {
-          "name": "birth_date",
-          "type": "date",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_name": {
-          "name": "guardian_name",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_phone": {
-          "name": "guardian_phone",
-          "type": "varchar(20)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "guardian_relation": {
-          "name": "guardian_relation",
-          "type": "varchar(50)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "consent_accepted_at": {
-          "name": "consent_accepted_at",
-          "type": "datetime",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "email_idx": {
-          "name": "email_idx",
-          "columns": [
-            "email"
-          ],
-          "isUnique": false
-        },
-        "users_grade_id_idx": {
-          "name": "users_grade_id_idx",
-          "columns": [
-            "grade_id"
-          ],
-          "isUnique": false
-        },
-        "users_department_id_idx": {
-          "name": "users_department_id_idx",
-          "columns": [
-            "department_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "users_id": {
-          "name": "users_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "users_email_unique": {
-          "name": "users_email_unique",
-          "columns": [
-            "email"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "users_to_roles": {
-      "name": "users_to_roles",
-      "columns": {
-        "user_id": {
-          "name": "user_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "role_id": {
-          "name": "role_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "user_id_idx": {
-          "name": "user_id_idx",
-          "columns": [
-            "user_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "users_to_roles_user_id_users_id_fk": {
-          "name": "users_to_roles_user_id_users_id_fk",
-          "tableFrom": "users_to_roles",
-          "tableTo": "users",
-          "columnsFrom": [
-            "user_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "users_to_roles_role_id_roles_id_fk": {
-          "name": "users_to_roles_role_id_roles_id_fk",
-          "tableFrom": "users_to_roles",
-          "tableTo": "roles",
-          "columnsFrom": [
-            "role_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "users_to_roles_user_id_role_id_pk": {
-          "name": "users_to_roles_user_id_role_id_pk",
-          "columns": [
-            "user_id",
-            "role_id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "verificationTokens": {
-      "name": "verificationTokens",
-      "columns": {
-        "identifier": {
-          "name": "identifier",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "token": {
-          "name": "token",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "expires": {
-          "name": "expires",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        }
-      },
-      "indexes": {},
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "verificationTokens_identifier_token_pk": {
-          "name": "verificationTokens_identifier_token_pk",
-          "columns": [
-            "identifier",
-            "token"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    }
-  },
-  "views": {},
-  "_meta": {
-    "schemas": {},
-    "tables": {},
-    "columns": {}
-  },
-  "internal": {
-    "tables": {},
-    "indexes": {}
-  }
-}
\ No newline at end of file
diff --git a/drizzle/meta/0004_snapshot.json b/drizzle/meta/0004_snapshot.json
deleted file mode 100644
index 9785c7a..0000000
--- a/drizzle/meta/0004_snapshot.json
+++ /dev/null
@@ -1,7644 +0,0 @@
-{
-  "version": "5",
-  "dialect": "mysql",
-  "id": "02a713ce-ad34-49a0-8256-c99a7d751758",
-  "prevId": "6fe72813-5ec3-4b06-a7d1-a475e3a06ddf",
-  "tables": {
-    "academic_years": {
-      "name": "academic_years",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "start_date": {
-          "name": "start_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "end_date": {
-          "name": "end_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "is_active": {
-          "name": "is_active",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "academic_years_name_idx": {
-          "name": "academic_years_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        },
-        "academic_years_active_idx": {
-          "name": "academic_years_active_idx",
-          "columns": [
-            "is_active"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "academic_years_id": {
-          "name": "academic_years_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "academic_years_name_unique": {
-          "name": "academic_years_name_unique",
-          "columns": [
-            "name"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "accounts": {
-      "name": "accounts",
-      "columns": {
-        "userId": {
-          "name": "userId",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "providerAccountId": {
-          "name": "providerAccountId",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "refresh_token": {
-          "name": "refresh_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "access_token": {
-          "name": "access_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "expires_at": {
-          "name": "expires_at",
-          "type": "int",
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-    "schemas": {},
-    "tables": {},
-    "columns": {}
-  },
-  "internal": {
-    "tables": {},
-    "indexes": {}
-  }
-}
\ No newline at end of file
diff --git a/drizzle/meta/0005_snapshot.json b/drizzle/meta/0005_snapshot.json
deleted file mode 100644
index 5f21a28..0000000
--- a/drizzle/meta/0005_snapshot.json
+++ /dev/null
@@ -1,8001 +0,0 @@
-{
-  "version": "5",
-  "dialect": "mysql",
-  "id": "299a992b-1810-4c15-ae7d-4b2166660df0",
-  "prevId": "02a713ce-ad34-49a0-8256-c99a7d751758",
-  "tables": {
-    "academic_years": {
-      "name": "academic_years",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "name": {
-          "name": "name",
-          "type": "varchar(100)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "start_date": {
-          "name": "start_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "end_date": {
-          "name": "end_date",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "is_active": {
-          "name": "is_active",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "academic_years_name_idx": {
-          "name": "academic_years_name_idx",
-          "columns": [
-            "name"
-          ],
-          "isUnique": false
-        },
-        "academic_years_active_idx": {
-          "name": "academic_years_active_idx",
-          "columns": [
-            "is_active"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "academic_years_id": {
-          "name": "academic_years_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {
-        "academic_years_name_unique": {
-          "name": "academic_years_name_unique",
-          "columns": [
-            "name"
-          ]
-        }
-      },
-      "checkConstraint": {}
-    },
-    "accounts": {
-      "name": "accounts",
-      "columns": {
-        "userId": {
-          "name": "userId",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "providerAccountId": {
-          "name": "providerAccountId",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "refresh_token": {
-          "name": "refresh_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "access_token": {
-          "name": "access_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "expires_at": {
-          "name": "expires_at",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "token_type": {
-          "name": "token_type",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "scope": {
-          "name": "scope",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "id_token": {
-          "name": "id_token",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "session_state": {
-          "name": "session_state",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        }
-      },
-      "indexes": {
-        "account_userId_idx": {
-          "name": "account_userId_idx",
-          "columns": [
-            "userId"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "accounts_userId_users_id_fk": {
-          "name": "accounts_userId_users_id_fk",
-          "tableFrom": "accounts",
-          "tableTo": "users",
-          "columnsFrom": [
-            "userId"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "accounts_provider_providerAccountId_pk": {
-          "name": "accounts_provider_providerAccountId_pk",
-          "columns": [
-            "provider",
-            "providerAccountId"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "ai_providers": {
-      "name": "ai_providers",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "provider": {
-          "name": "provider",
-          "type": "enum('zhipu','openai','gemini','custom')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "base_url": {
-          "name": "base_url",
-          "type": "varchar(512)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "model": {
-          "name": "model",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "api_key_encrypted": {
-          "name": "api_key_encrypted",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "api_key_last4": {
-          "name": "api_key_last4",
-          "type": "varchar(4)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "is_default": {
-          "name": "is_default",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_by": {
-          "name": "created_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "updated_by": {
-          "name": "updated_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "ai_provider_idx": {
-          "name": "ai_provider_idx",
-          "columns": [
-            "provider"
-          ],
-          "isUnique": false
-        },
-        "ai_provider_default_idx": {
-          "name": "ai_provider_default_idx",
-          "columns": [
-            "is_default"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {},
-      "compositePrimaryKeys": {
-        "ai_providers_id": {
-          "name": "ai_providers_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "announcements": {
-      "name": "announcements",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "title": {
-          "name": "title",
-          "type": "varchar(255)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "content": {
-          "name": "content",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "type": {
-          "name": "type",
-          "type": "enum('school','grade','class')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "'school'"
-        },
-        "status": {
-          "name": "status",
-          "type": "enum('draft','published','archived')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "'draft'"
-        },
-        "target_grade_id": {
-          "name": "target_grade_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "target_class_id": {
-          "name": "target_class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "author_id": {
-          "name": "author_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "published_at": {
-          "name": "published_at",
-          "type": "datetime",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "announcements_author_idx": {
-          "name": "announcements_author_idx",
-          "columns": [
-            "author_id"
-          ],
-          "isUnique": false
-        },
-        "announcements_status_idx": {
-          "name": "announcements_status_idx",
-          "columns": [
-            "status"
-          ],
-          "isUnique": false
-        },
-        "announcements_type_idx": {
-          "name": "announcements_type_idx",
-          "columns": [
-            "type"
-          ],
-          "isUnique": false
-        },
-        "announcements_target_grade_idx": {
-          "name": "announcements_target_grade_idx",
-          "columns": [
-            "target_grade_id"
-          ],
-          "isUnique": false
-        },
-        "announcements_target_class_idx": {
-          "name": "announcements_target_class_idx",
-          "columns": [
-            "target_class_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "announcements_author_id_users_id_fk": {
-          "name": "announcements_author_id_users_id_fk",
-          "tableFrom": "announcements",
-          "tableTo": "users",
-          "columnsFrom": [
-            "author_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "no action",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "announcements_id": {
-          "name": "announcements_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "attendance_records": {
-      "name": "attendance_records",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "student_id": {
-          "name": "student_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "class_id": {
-          "name": "class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "schedule_id": {
-          "name": "schedule_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "date": {
-          "name": "date",
-          "type": "date",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "status": {
-          "name": "status",
-          "type": "enum('present','absent','late','early_leave','excused')",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "remark": {
-          "name": "remark",
-          "type": "text",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "recorded_by": {
-          "name": "recorded_by",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "attendance_records_student_idx": {
-          "name": "attendance_records_student_idx",
-          "columns": [
-            "student_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_class_idx": {
-          "name": "attendance_records_class_idx",
-          "columns": [
-            "class_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_date_idx": {
-          "name": "attendance_records_date_idx",
-          "columns": [
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_class_date_idx": {
-          "name": "attendance_records_class_date_idx",
-          "columns": [
-            "class_id",
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_student_date_idx": {
-          "name": "attendance_records_student_date_idx",
-          "columns": [
-            "student_id",
-            "date"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_schedule_idx": {
-          "name": "attendance_records_schedule_idx",
-          "columns": [
-            "schedule_id"
-          ],
-          "isUnique": false
-        },
-        "attendance_records_recorded_by_idx": {
-          "name": "attendance_records_recorded_by_idx",
-          "columns": [
-            "recorded_by"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "attendance_records_student_id_users_id_fk": {
-          "name": "attendance_records_student_id_users_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "student_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "attendance_records_class_id_classes_id_fk": {
-          "name": "attendance_records_class_id_classes_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "attendance_records_recorded_by_users_id_fk": {
-          "name": "attendance_records_recorded_by_users_id_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "recorded_by"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_c_fk": {
-          "name": "ar_c_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_s_fk": {
-          "name": "ar_s_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "student_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "ar_rb_fk": {
-          "name": "ar_rb_fk",
-          "tableFrom": "attendance_records",
-          "tableTo": "users",
-          "columnsFrom": [
-            "recorded_by"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "attendance_records_id": {
-          "name": "attendance_records_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "attendance_rules": {
-      "name": "attendance_rules",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false
-        },
-        "class_id": {
-          "name": "class_id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false
-        },
-        "late_threshold_minutes": {
-          "name": "late_threshold_minutes",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 15
-        },
-        "early_leave_threshold_minutes": {
-          "name": "early_leave_threshold_minutes",
-          "type": "int",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": 15
-        },
-        "enable_auto_mark": {
-          "name": "enable_auto_mark",
-          "type": "boolean",
-          "primaryKey": false,
-          "notNull": false,
-          "autoincrement": false,
-          "default": false
-        },
-        "created_at": {
-          "name": "created_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "default": "(now())"
-        },
-        "updated_at": {
-          "name": "updated_at",
-          "type": "timestamp",
-          "primaryKey": false,
-          "notNull": true,
-          "autoincrement": false,
-          "onUpdate": true,
-          "default": "(now())"
-        }
-      },
-      "indexes": {
-        "attendance_rules_class_idx": {
-          "name": "attendance_rules_class_idx",
-          "columns": [
-            "class_id"
-          ],
-          "isUnique": false
-        }
-      },
-      "foreignKeys": {
-        "attendance_rules_class_id_classes_id_fk": {
-          "name": "attendance_rules_class_id_classes_id_fk",
-          "tableFrom": "attendance_rules",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        },
-        "atr_c_fk": {
-          "name": "atr_c_fk",
-          "tableFrom": "attendance_rules",
-          "tableTo": "classes",
-          "columnsFrom": [
-            "class_id"
-          ],
-          "columnsTo": [
-            "id"
-          ],
-          "onDelete": "cascade",
-          "onUpdate": "no action"
-        }
-      },
-      "compositePrimaryKeys": {
-        "attendance_rules_id": {
-          "name": "attendance_rules_id",
-          "columns": [
-            "id"
-          ]
-        }
-      },
-      "uniqueConstraints": {},
-      "checkConstraint": {}
-    },
-    "audit_logs": {
-      "name": "audit_logs",
-      "columns": {
-        "id": {
-          "name": "id",
-          "type": "varchar(128)",
-          "primaryKey": false,
-          "notNull": true,
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-}
\ No newline at end of file
diff --git a/drizzle/meta/_journal.json b/drizzle/meta/_journal.json
index c8fda5c..7e833d4 100644
--- a/drizzle/meta/_journal.json
+++ b/drizzle/meta/_journal.json
@@ -5,92 +5,8 @@
     {
       "idx": 0,
       "version": "5",
-      "when": 1781676504560,
-      "tag": "0000_perfect_pestilence",
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-      "tag": "0001_heavy_sage",
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-    },
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-    },
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-      "tag": "0004_calm_sandman",
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-    },
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-      "when": 1782141546400,
-      "tag": "0005_messy_pride",
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-    },
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-      "tag": "0013_message_recall",
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-      "when": 1782374500000,
-      "tag": "0014_message_templates",
-      "breakpoints": true
-    },
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-      "version": "5",
-      "when": 1782374600000,
-      "tag": "0015_group_messages",
-      "breakpoints": true
-    },
-    {
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-      "version": "5",
-      "when": 1782445200000,
-      "tag": "0018_attendance_status_reason",
-      "breakpoints": true
-    },
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-      "when": 1782448800000,
-      "tag": "0019_attendance_warning_thresholds",
-      "breakpoints": true
-    },
-    {
-      "idx": 11,
-      "version": "5",
-      "when": 1782452400000,
-      "tag": "0020_leave_requests",
-      "breakpoints": true
-    },
-    {
-      "idx": 12,
-      "version": "5",
-      "when": 1782456000000,
-      "tag": "0021_attendance_period",
+      "when": 1783064688766,
+      "tag": "0000_aberrant_deathstrike",
       "breakpoints": true
     }
   ]