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-card.tsx

@@ -0,0 +1,89 @@
+import Link from "next/link"
+import { ChevronRight, GraduationCap, PenTool, TriangleAlert } from "lucide-react"
+
+import { Avatar, AvatarFallback, AvatarImage } from "@/shared/components/ui/avatar"
+import { Badge } from "@/shared/components/ui/badge"
+import { Card, CardContent, CardHeader, CardTitle } from "@/shared/components/ui/card"
+import type { ChildDashboardData } from "@/modules/parent/types"
+
+const getInitials = (name: string | null) => {
+  if (!name) return "S"
+  return name.slice(0, 2).toUpperCase()
+}
+
+export function ChildCard({ child }: { child: ChildDashboardData }) {
+  const { basicInfo, homeworkSummary, gradeTrend } = child
+  const ranking = gradeTrend.ranking
+  const latestGrade = gradeTrend.recent[0]
+
+  return (
+    <Link href={`/parent/children/${basicInfo.id}`} className="block">
+      <Card className="hover:bg-muted/50 transition-colors cursor-pointer h-full">
+        <CardHeader className="flex flex-row items-center gap-4 space-y-0">
+          <Avatar className="h-12 w-12">
+            <AvatarImage src={basicInfo.image ?? undefined} alt={basicInfo.name ?? "Child"} />
+            <AvatarFallback>{getInitials(basicInfo.name)}</AvatarFallback>
+          </Avatar>
+          <div className="flex-1 min-w-0 space-y-1">
+            <CardTitle className="text-base truncate">{basicInfo.name ?? "Unnamed"}</CardTitle>
+            <div className="flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
+              {basicInfo.className ? (
+                <Badge variant="secondary" className="text-xs">
+                  {basicInfo.className}
+                </Badge>
+              ) : null}
+              {basicInfo.gradeName ? <span>{basicInfo.gradeName}</span> : null}
+              {basicInfo.relation ? <span>· {basicInfo.relation}</span> : null}
+            </div>
+          </div>
+          <ChevronRight className="h-4 w-4 text-muted-foreground shrink-0" />
+        </CardHeader>
+        <CardContent className="space-y-3">
+          <div className="grid grid-cols-3 gap-2 text-center">
+            <div className="rounded-md border bg-card p-2">
+              <div className="text-xs text-muted-foreground flex items-center justify-center gap-1">
+                <PenTool className="h-3 w-3" />
+                Pending
+              </div>
+              <div className="text-lg font-semibold tabular-nums">
+                {homeworkSummary.pendingCount}
+              </div>
+            </div>
+            <div className="rounded-md border bg-card p-2">
+              <div className="text-xs text-muted-foreground flex items-center justify-center gap-1">
+                <TriangleAlert className="h-3 w-3" />
+                Overdue
+              </div>
+              <div
+                className={`text-lg font-semibold tabular-nums ${
+                  homeworkSummary.overdueCount > 0 ? "text-destructive" : ""
+                }`}
+              >
+                {homeworkSummary.overdueCount}
+              </div>
+            </div>
+            <div className="rounded-md border bg-card p-2">
+              <div className="text-xs text-muted-foreground flex items-center justify-center gap-1">
+                <GraduationCap className="h-3 w-3" />
+                Avg
+              </div>
+              <div className="text-lg font-semibold tabular-nums">
+                {ranking ? `${Math.round(ranking.percentage)}%` : "-"}
+              </div>
+            </div>
+          </div>
+          {latestGrade ? (
+            <div className="text-xs text-muted-foreground">
+              Latest:{" "}
+              <span className="font-medium text-foreground tabular-nums">
+                {latestGrade.score}/{latestGrade.maxScore}
+              </span>{" "}
+              ({latestGrade.assignmentTitle.slice(0, 20)}
+              {latestGrade.assignmentTitle.length > 20 ? "..." : ""})
+            </div>
+          ) : null}
+        </CardContent>
+      </Card>
+    </Link>
+  )
+}