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/modules/parent/components/parent-dashboard.tsx

@@ -0,0 +1,68 @@
+import { CalendarDays, GraduationCap, Users } from "lucide-react"
+
+import { Button } from "@/shared/components/ui/button"
+import { EmptyState } from "@/shared/components/ui/empty-state"
+import { ChildCard } from "./child-card"
+import type { ParentDashboardData } from "@/modules/parent/types"
+
+export function ParentDashboard({ data }: { data: ParentDashboardData }) {
+  const { parentName, children } = data
+  const hasChildren = children.length > 0
+
+  const hour = new Date().getHours()
+  let greeting = "Welcome"
+  if (hour < 12) greeting = "Good morning"
+  else if (hour < 18) greeting = "Good afternoon"
+  else greeting = "Good evening"
+
+  return (
+    <div className="space-y-6">
+      <div className="flex flex-col justify-between gap-4 md:flex-row md:items-center">
+        <div className="space-y-1">
+          <h1 className="text-3xl font-bold tracking-tight">Parent Dashboard</h1>
+          <div className="text-sm text-muted-foreground">
+            {greeting}
+            {parentName ? `, ${parentName}` : ""}. Here&apos;s an overview of your children.
+          </div>
+        </div>
+        <div className="flex flex-wrap items-center gap-2">
+          <Button asChild variant="outline" size="sm" className="gap-2">
+            <a href="/parent/grades">
+              <GraduationCap className="h-4 w-4" />
+              Grades
+            </a>
+          </Button>
+          <Button asChild variant="outline" size="sm" className="gap-2">
+            <a href="/announcements">
+              <CalendarDays className="h-4 w-4" />
+              Announcements
+            </a>
+          </Button>
+        </div>
+      </div>
+
+      {!hasChildren ? (
+        <EmptyState
+          icon={Users}
+          title="No children linked"
+          description="Your account is not linked to any student accounts yet. Please contact the school administrator."
+          className="border-none shadow-none"
+        />
+      ) : (
+        <>
+          <div className="flex items-center gap-2 text-sm text-muted-foreground">
+            <Users className="h-4 w-4" />
+            <span>
+              {children.length} {children.length === 1 ? "child" : "children"} linked
+            </span>
+          </div>
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+            {children.map((child) => (
+              <ChildCard key={child.basicInfo.id} child={child} />
+            ))}
+          </div>
+        </>
+      )}
+    </div>
+  )
+}