feat: 完成 P1 全部功能 + 修复 proxy 导出 + 切换 MySQL 端口至 14013

## P1 功能（20 项）
- 站内消息系统、家长仪表盘、学生考勤管理
- Excel 导入导出、用户批量导入、成绩导出
- 排课规则+自动排课+课表调整
- 成绩趋势+对比分析、密码安全策略、速率限制
- 数据变更日志、文件预览+存储策略、全文检索
- 依赖审计集成 CI、数据库定时备份、E2E 测试完善
- 通知偏好管理

## 基础设施修复
- src/proxy.ts: 将 middleware 导出重命名为 proxy（Next.js 16 要求）
- .env: MySQL 端口从 13002 切换至 14013
- scripts/create-db.ts: 新增数据库初始化脚本

## 架构文档同步
- 004_architecture_impact_map.md 和 005_architecture_data.json
  完整记录所有新增表、模块、路由、权限、依赖关系

src/app/(dashboard)/admin/course-plans/[id]/edit/page.tsx

@@ -0,0 +1,45 @@
+import { notFound } from "next/navigation"
+
+import { getCoursePlanById } from "@/modules/course-plans/data-access"
+import { getSubjectOptions } from "@/modules/course-plans/data-access"
+import { getAdminClasses } from "@/modules/classes/data-access"
+import { getAcademicYears, getStaffOptions } from "@/modules/school/data-access"
+import { CoursePlanForm } from "@/modules/course-plans/components/course-plan-form"
+
+export const dynamic = "force-dynamic"
+
+export default async function EditCoursePlanPage({
+  params,
+}: {
+  params: Promise<{ id: string }>
+}) {
+  const { id } = await params
+
+  const [plan, classes, subjects, teachers, academicYears] = await Promise.all([
+    getCoursePlanById(id),
+    getAdminClasses(),
+    getSubjectOptions(),
+    getStaffOptions(),
+    getAcademicYears(),
+  ])
+
+  if (!plan) notFound()
+
+  return (
+    <div className="flex h-full flex-col space-y-8 p-8">
+      <div>
+        <h2 className="text-2xl font-bold tracking-tight">Edit Course Plan</h2>
+        <p className="text-muted-foreground">Update the course plan details below.</p>
+      </div>
+      <CoursePlanForm
+        mode="edit"
+        plan={plan}
+        classes={classes.map((c) => ({ id: c.id, name: c.name }))}
+        subjects={subjects}
+        teachers={teachers.map((t) => ({ id: t.id, name: t.name }))}
+        academicYears={academicYears.map((y) => ({ id: y.id, name: y.name }))}
+        backHref={`/admin/course-plans/${plan.id}`}
+      />
+    </div>
+  )
+}

src/app/(dashboard)/admin/course-plans/[id]/page.tsx

@@ -0,0 +1,27 @@
+import { notFound } from "next/navigation"
+
+import { getCoursePlanById } from "@/modules/course-plans/data-access"
+import { CoursePlanDetail } from "@/modules/course-plans/components/course-plan-detail"
+
+export const dynamic = "force-dynamic"
+
+export default async function CoursePlanDetailPage({
+  params,
+}: {
+  params: Promise<{ id: string }>
+}) {
+  const { id } = await params
+  const plan = await getCoursePlanById(id)
+
+  if (!plan) notFound()
+
+  return (
+    <div className="flex h-full flex-col space-y-6 p-8">
+      <CoursePlanDetail
+        plan={plan}
+        editHref={`/admin/course-plans/${plan.id}/edit`}
+        backHref="/admin/course-plans"
+      />
+    </div>
+  )
+}