feat: 新增备课模块并修复全模块 P0/P1/P2 缺陷

主要变更:

- 新增 lesson-preparation 模块: 备课编辑器、节点编辑、AI 建议、知识点选择、版本历史、作业发布

- 新增 shared 通用组件: charts/question-bank-filters/schedule-list/ui (chip-nav/filter-bar/page-header/stat-card/stat-item)

- 新增 student/admin 端 loading.tsx 与 error.tsx, 优化加载与错误态体验

- 新增 teacher/lesson-plans 页面 (列表/新建/编辑)

- 新增 drizzle 迁移 0002_tiny_lionheart 及 snapshot

- 新增 textbooks/schema.ts 与 exams/utils/normalize-structure.ts

- 修复 Tiptap v3 SSR hydration 崩溃 (rich-text-block immediatelyRender: false)

- 重构多模块 data-access/actions/组件, 修复权限校验与类型规范

- 同步架构文档 004/005 反映新增模块、导出、依赖关系

- 归档 bugs/* 测试报告与 e2e 测试脚本 (admin/parent/student/teacher web_test)

scripts/create-test-plan.ts

@@ -0,0 +1,38 @@
+// 直接用 SQL 创建测试课案
+import { db } from "../src/shared/db";
+import { sql } from "drizzle-orm";
+import { createId } from "@paralleldrive/cuid2";
+
+async function main() {
+  // 查找语文老师
+  const users = await db.execute(sql`SELECT id, email FROM users WHERE email = ${"t_chinese_1@xiaoxue.edu.cn"} LIMIT 1`) as unknown as Array<{id: string; email: string}>;
+  const realTeacherId = users[0]?.id;
+  console.log("Teacher ID:", realTeacherId);
+
+  if (!realTeacherId) {
+    console.error("未找到语文老师");
+    process.exit(1);
+  }
+
+  const planId = createId();
+  // 构造一个简单的常规课 content JSON
+  const content = JSON.stringify({
+    version: 1,
+    blocks: [
+      { id: createId(), type: "objective", title: "教学目标", data: { html: "<p>测试目标内容</p>", knowledgePointIds: [] }, order: 0 },
+      { id: createId(), type: "key_point", title: "教学重难点", data: { html: "", knowledgePointIds: [] }, order: 1 },
+      { id: createId(), type: "import", title: "导入", data: { html: "", knowledgePointIds: [] }, order: 2 },
+      { id: createId(), type: "new_teaching", title: "新授", data: { html: "", knowledgePointIds: [] }, order: 3 },
+    ],
+  });
+
+  await db.execute(sql`
+    INSERT INTO lesson_plans (id, title, content, status, creator_id, template_id, template_name, last_saved_at, created_at, updated_at)
+    VALUES (${planId}, ${"测试课案_v2"}, ${content}, ${"draft"}, ${realTeacherId}, ${"tpl_regular"}, ${"常规课"}, NOW(), NOW(), NOW())
+  `);
+
+  console.log("PLAN_ID:", planId);
+  process.exit(0);
+}
+
+main().catch((e) => { console.error(e); process.exit(1); });