Checkpoint: Tennis Training Hub v1.0 - 完整功能版本：用户名登录、AI训练计划生成、MediaPipe视频姿势识别、击球统计、挥拍速度分析、NTRP自动评分系统、训练进度追踪、视频库管理、AI矫正建议

client/src/pages/Dashboard.tsx

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+import { useAuth } from "@/_core/hooks/useAuth";
+import { trpc } from "@/lib/trpc";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import { Progress } from "@/components/ui/progress";
+import { Skeleton } from "@/components/ui/skeleton";
+import {
+  Target, Video, Activity, TrendingUp, Award, Clock,
+  Zap, BarChart3, ChevronRight
+} from "lucide-react";
+import { useLocation } from "wouter";
+import { ResponsiveContainer, LineChart, Line, XAxis, YAxis, Tooltip, CartesianGrid, AreaChart, Area } from "recharts";
+
+function NTRPBadge({ rating }: { rating: number }) {
+  let level = "初学者";
+  let color = "bg-gray-100 text-gray-700";
+  if (rating >= 4.0) { level = "高级竞技"; color = "bg-purple-100 text-purple-700"; }
+  else if (rating >= 3.0) { level = "中高级"; color = "bg-blue-100 text-blue-700"; }
+  else if (rating >= 2.5) { level = "中级"; color = "bg-green-100 text-green-700"; }
+  else if (rating >= 2.0) { level = "初中级"; color = "bg-yellow-100 text-yellow-700"; }
+  else if (rating >= 1.5) { level = "初级"; color = "bg-orange-100 text-orange-700"; }
+  return (
+    <span className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${color}`}>
+      NTRP {rating.toFixed(1)} · {level}
+    </span>
+  );
+}
+
+export default function Dashboard() {
+  const { user } = useAuth();
+  const { data: stats, isLoading } = trpc.profile.stats.useQuery();
+  const [, setLocation] = useLocation();
+
+  if (isLoading) {
+    return (
+      <div className="space-y-6">
+        <Skeleton className="h-32 w-full" />
+        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+          {[1, 2, 3, 4].map(i => <Skeleton key={i} className="h-28" />)}
+        </div>
+      </div>
+    );
+  }
+
+  const ratingData = stats?.ratingHistory?.map((r: any) => ({
+    date: new Date(r.createdAt).toLocaleDateString("zh-CN", { month: "short", day: "numeric" }),
+    rating: r.rating,
+    ...((r.dimensionScores as any) || {}),
+  })) || [];
+
+  return (
+    <div className="space-y-6">
+      {/* Welcome header */}
+      <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
+        <div>
+          <h1 className="text-2xl font-bold tracking-tight">
+            欢迎回来，{user?.name || "球友"}
+          </h1>
+          <div className="flex items-center gap-3 mt-2">
+            <NTRPBadge rating={stats?.ntrpRating || 1.5} />
+            <span className="text-sm text-muted-foreground">
+              已完成 {stats?.totalSessions || 0} 次训练
+            </span>
+          </div>
+        </div>
+        <div className="flex gap-2">
+          <Button onClick={() => setLocation("/training")} className="gap-2">
+            <Target className="h-4 w-4" />
+            开始训练
+          </Button>
+          <Button variant="outline" onClick={() => setLocation("/analysis")} className="gap-2">
+            <Video className="h-4 w-4" />
+            视频分析
+          </Button>
+        </div>
+      </div>
+
+      {/* Stats cards */}
+      <div className="grid grid-cols-2 lg:grid-cols-4 gap-4">
+        <Card className="border-0 shadow-sm bg-gradient-to-br from-green-50 to-emerald-50">
+          <CardContent className="pt-5 pb-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs font-medium text-muted-foreground">NTRP评分</p>
+                <p className="text-2xl font-bold text-primary mt-1">
+                  {(stats?.ntrpRating || 1.5).toFixed(1)}
+                </p>
+              </div>
+              <div className="h-10 w-10 rounded-xl bg-primary/10 flex items-center justify-center">
+                <Award className="h-5 w-5 text-primary" />
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card className="border-0 shadow-sm">
+          <CardContent className="pt-5 pb-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs font-medium text-muted-foreground">训练次数</p>
+                <p className="text-2xl font-bold mt-1">{stats?.totalSessions || 0}</p>
+              </div>
+              <div className="h-10 w-10 rounded-xl bg-blue-50 flex items-center justify-center">
+                <Activity className="h-5 w-5 text-blue-600" />
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card className="border-0 shadow-sm">
+          <CardContent className="pt-5 pb-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs font-medium text-muted-foreground">训练时长</p>
+                <p className="text-2xl font-bold mt-1">{stats?.totalMinutes || 0}<span className="text-sm font-normal text-muted-foreground ml-1">分钟</span></p>
+              </div>
+              <div className="h-10 w-10 rounded-xl bg-orange-50 flex items-center justify-center">
+                <Clock className="h-5 w-5 text-orange-600" />
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card className="border-0 shadow-sm">
+          <CardContent className="pt-5 pb-4">
+            <div className="flex items-center justify-between">
+              <div>
+                <p className="text-xs font-medium text-muted-foreground">总击球数</p>
+                <p className="text-2xl font-bold mt-1">{stats?.totalShots || 0}</p>
+              </div>
+              <div className="h-10 w-10 rounded-xl bg-purple-50 flex items-center justify-center">
+                <Zap className="h-5 w-5 text-purple-600" />
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+
+      {/* Rating trend chart */}
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        <Card className="border-0 shadow-sm">
+          <CardHeader className="pb-2">
+            <div className="flex items-center justify-between">
+              <CardTitle className="text-base font-semibold flex items-center gap-2">
+                <TrendingUp className="h-4 w-4 text-primary" />
+                NTRP评分趋势
+              </CardTitle>
+              <Button variant="ghost" size="sm" onClick={() => setLocation("/rating")} className="text-xs gap-1">
+                查看详情 <ChevronRight className="h-3 w-3" />
+              </Button>
+            </div>
+          </CardHeader>
+          <CardContent>
+            {ratingData.length > 0 ? (
+              <ResponsiveContainer width="100%" height={200}>
+                <AreaChart data={ratingData}>
+                  <defs>
+                    <linearGradient id="ratingGradient" x1="0" y1="0" x2="0" y2="1">
+                      <stop offset="5%" stopColor="oklch(0.55 0.16 145)" stopOpacity={0.3} />
+                      <stop offset="95%" stopColor="oklch(0.55 0.16 145)" stopOpacity={0} />
+                    </linearGradient>
+                  </defs>
+                  <CartesianGrid strokeDasharray="3 3" stroke="#f0f0f0" />
+                  <XAxis dataKey="date" tick={{ fontSize: 11 }} />
+                  <YAxis domain={[1, 5]} tick={{ fontSize: 11 }} />
+                  <Tooltip />
+                  <Area type="monotone" dataKey="rating" stroke="oklch(0.55 0.16 145)" fill="url(#ratingGradient)" strokeWidth={2} />
+                </AreaChart>
+              </ResponsiveContainer>
+            ) : (
+              <div className="h-[200px] flex items-center justify-center text-muted-foreground text-sm">
+                <div className="text-center">
+                  <BarChart3 className="h-8 w-8 mx-auto mb-2 opacity-30" />
+                  <p>完成视频分析后将显示评分趋势</p>
+                </div>
+              </div>
+            )}
+          </CardContent>
+        </Card>
+
+        {/* Recent analyses */}
+        <Card className="border-0 shadow-sm">
+          <CardHeader className="pb-2">
+            <div className="flex items-center justify-between">
+              <CardTitle className="text-base font-semibold flex items-center gap-2">
+                <Video className="h-4 w-4 text-primary" />
+                最近分析
+              </CardTitle>
+              <Button variant="ghost" size="sm" onClick={() => setLocation("/videos")} className="text-xs gap-1">
+                查看全部 <ChevronRight className="h-3 w-3" />
+              </Button>
+            </div>
+          </CardHeader>
+          <CardContent>
+            {(stats?.recentAnalyses?.length || 0) > 0 ? (
+              <div className="space-y-3">
+                {stats!.recentAnalyses.slice(0, 4).map((a: any) => (
+                  <div key={a.id} className="flex items-center justify-between py-2 border-b last:border-0">
+                    <div className="flex items-center gap-3">
+                      <div className="h-8 w-8 rounded-lg bg-primary/5 flex items-center justify-center text-xs font-bold text-primary">
+                        {Math.round(a.overallScore || 0)}
+                      </div>
+                      <div>
+                        <p className="text-sm font-medium">{a.exerciseType || "综合分析"}</p>
+                        <p className="text-xs text-muted-foreground">
+                          {new Date(a.createdAt).toLocaleDateString("zh-CN")}
+                          {a.shotCount ? ` · ${a.shotCount}次击球` : ""}
+                        </p>
+                      </div>
+                    </div>
+                    <div className="flex items-center gap-2">
+                      <Progress value={a.overallScore || 0} className="w-16 h-1.5" />
+                      <span className="text-xs text-muted-foreground">{Math.round(a.overallScore || 0)}分</span>
+                    </div>
+                  </div>
+                ))}
+              </div>
+            ) : (
+              <div className="h-[200px] flex items-center justify-center text-muted-foreground text-sm">
+                <div className="text-center">
+                  <Video className="h-8 w-8 mx-auto mb-2 opacity-30" />
+                  <p>上传训练视频开始AI分析</p>
+                </div>
+              </div>
+            )}
+          </CardContent>
+        </Card>
+      </div>
+
+      {/* Quick actions */}
+      <Card className="border-0 shadow-sm">
+        <CardHeader className="pb-2">
+          <CardTitle className="text-base font-semibold">快速开始</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <div className="grid grid-cols-1 sm:grid-cols-3 gap-3">
+            <button
+              onClick={() => setLocation("/training")}
+              className="flex items-center gap-3 p-4 rounded-xl border hover:bg-accent transition-colors text-left"
+            >
+              <div className="h-10 w-10 rounded-xl bg-green-100 flex items-center justify-center shrink-0">
+                <Target className="h-5 w-5 text-green-700" />
+              </div>
+              <div>
+                <p className="font-medium text-sm">生成训练计划</p>
+                <p className="text-xs text-muted-foreground">AI定制个人训练方案</p>
+              </div>
+            </button>
+            <button
+              onClick={() => setLocation("/analysis")}
+              className="flex items-center gap-3 p-4 rounded-xl border hover:bg-accent transition-colors text-left"
+            >
+              <div className="h-10 w-10 rounded-xl bg-blue-100 flex items-center justify-center shrink-0">
+                <Video className="h-5 w-5 text-blue-700" />
+              </div>
+              <div>
+                <p className="font-medium text-sm">上传视频分析</p>
+                <p className="text-xs text-muted-foreground">MediaPipe AI姿势识别</p>
+              </div>
+            </button>
+            <button
+              onClick={() => setLocation("/rating")}
+              className="flex items-center gap-3 p-4 rounded-xl border hover:bg-accent transition-colors text-left"
+            >
+              <div className="h-10 w-10 rounded-xl bg-purple-100 flex items-center justify-center shrink-0">
+                <Award className="h-5 w-5 text-purple-700" />
+              </div>
+              <div>
+                <p className="font-medium text-sm">查看NTRP评分</p>
+                <p className="text-xs text-muted-foreground">多维度能力评估</p>
+              </div>
+            </button>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}