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/child-detail-header.tsx

@@ -0,0 +1,49 @@
+import Link from "next/link"
+import { ArrowLeft, GraduationCap } from "lucide-react"
+
+import { Avatar, AvatarFallback, AvatarImage } from "@/shared/components/ui/avatar"
+import { Badge } from "@/shared/components/ui/badge"
+import { Button } from "@/shared/components/ui/button"
+import type { ChildDashboardData } from "@/modules/parent/types"
+
+const getInitials = (name: string | null) => {
+  if (!name) return "S"
+  return name.slice(0, 2).toUpperCase()
+}
+
+export function ChildDetailHeader({ child }: { child: ChildDashboardData }) {
+  const { basicInfo } = child
+
+  return (
+    <div className="space-y-4">
+      <Button asChild variant="ghost" size="sm" className="gap-2 -ml-2">
+        <Link href="/parent/dashboard">
+          <ArrowLeft className="h-4 w-4" />
+          Back to Dashboard
+        </Link>
+      </Button>
+      <div className="flex items-center gap-4">
+        <Avatar className="h-16 w-16">
+          <AvatarImage src={basicInfo.image ?? undefined} alt={basicInfo.name ?? "Child"} />
+          <AvatarFallback className="text-lg">{getInitials(basicInfo.name)}</AvatarFallback>
+        </Avatar>
+        <div className="space-y-1">
+          <h1 className="text-2xl font-bold tracking-tight">{basicInfo.name ?? "Unnamed"}</h1>
+          <div className="flex flex-wrap items-center gap-2 text-sm text-muted-foreground">
+            {basicInfo.className ? (
+              <Badge variant="secondary">{basicInfo.className}</Badge>
+            ) : null}
+            {basicInfo.gradeName ? (
+              <span className="flex items-center gap-1">
+                <GraduationCap className="h-3 w-3" />
+                {basicInfo.gradeName}
+              </span>
+            ) : null}
+            {basicInfo.relation ? <span>· {basicInfo.relation}</span> : null}
+            <span>· {basicInfo.email}</span>
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}