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/check-parent.mjs

@@ -0,0 +1,51 @@
+// Quick check if parent user exists in DB
+import mysql from "mysql2/promise"
+
+const pool = mysql.createPool({
+  uri: "mysql://root:wx1998WX@mysql.eazygame.cn:14013/next_edu",
+})
+
+async function main() {
+  const conn = await pool.getConnection()
+  try {
+    // Check parent user
+    const [rows] = await conn.execute(
+      "SELECT id, name, email, password FROM users WHERE email = ?",
+      ["parent_g1c1_1@xiaoxue.edu.cn"],
+    )
+    console.log("Parent user:", JSON.stringify(rows, null, 2))
+
+    // Check parent_student_relations
+    const [cols] = await conn.execute("SHOW COLUMNS FROM parent_student_relations")
+    console.log("\nparent_student_relations columns:", JSON.stringify(cols, null, 2))
+
+    // Check relations using correct column names
+    const [relations] = await conn.execute(
+      `SELECT * FROM parent_student_relations WHERE parent_id = ?`,
+      ["user_p_s_g1c1_1"],
+    )
+    console.log("\nParent relations:", JSON.stringify(relations, null, 2))
+
+    // Check password_security
+    const [sec] = await conn.execute(
+      "SELECT * FROM password_security WHERE user_id = ?",
+      ["user_p_s_g1c1_1"],
+    )
+    console.log("\nPassword security:", JSON.stringify(sec, null, 2))
+
+    // Check roles
+    const [roles] = await conn.execute(
+      `SELECT r.name FROM users_to_roles utr JOIN roles r ON r.id = utr.role_id WHERE utr.user_id = ?`,
+      ["user_p_s_g1c1_1"],
+    )
+    console.log("\nRoles:", JSON.stringify(roles, null, 2))
+  } finally {
+    conn.release()
+    await pool.end()
+  }
+}
+
+main().catch((e) => {
+  console.error("Error:", e.message)
+  process.exit(1)
+})