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)

src/modules/scheduling/data-access.ts

@@ -1,6 +1,6 @@
 import "server-only"
 
-import { and, asc, desc, eq, isNull, or, type SQL } from "drizzle-orm"
+import { and, asc, desc, eq, inArray, isNull, or, type SQL } from "drizzle-orm"
 import { createId } from "@paralleldrive/cuid2"
 
 import { db } from "@/shared/db"
@@ -111,7 +111,6 @@ export async function getScheduleChanges(
       change: scheduleChanges,
       className: classes.name,
       originalTeacherName: users.name,
-      requesterName: users.name,
     })
     .from(scheduleChanges)
     .innerJoin(classes, eq(classes.id, scheduleChanges.classId))
@@ -132,15 +131,10 @@ export async function getScheduleChanges(
 
   const userMap = new Map<string, string>()
   if (userIds.length > 0) {
-    const firstId = userIds[0]
     const userRows = await db
       .select({ id: users.id, name: users.name })
       .from(users)
-      .where(
-        userIds.length === 1 && firstId
-          ? eq(users.id, firstId)
-          : or(...userIds.map((id) => eq(users.id, id)))
-      )
+      .where(inArray(users.id, userIds))
     for (const u of userRows) userMap.set(u.id, u.name ?? "Unknown")
   }