feat: 个人中心展示决策次数徽章「已拯救 X 次选择困难症」

src/app/profile/page.tsx

@@ -19,6 +19,7 @@ import {
   X,
   Eye,
   EyeOff,
+  Zap,
 } from "lucide-react";
 import { getUserId, getCachedProfile, setCachedProfile, setCachedPreferences, logout } from "@/lib/userId";
 import { getAvatarBg, AVATARS } from "@/lib/avatars";
@@ -33,7 +34,7 @@ function firstImage(r: Restaurant): string {
 export default function ProfilePage() {
   const router = useRouter();
   const [userId, setUserId] = useState("");
-  const [profile, setProfile] = useState<(UserProfile & { email?: string; preferences?: UserPreferences }) | null>(null);
+  const [profile, setProfile] = useState<(UserProfile & { email?: string; preferences?: UserPreferences; decisionCount?: number }) | null>(null);
   const [loading, setLoading] = useState(true);
 
   const [history, setHistory] = useState<DecisionRecord[]>([]);
@@ -333,6 +334,12 @@ export default function ProfilePage() {
                 </div>
               )}
               {usernameMsg && <p className="mt-1 text-xs text-rose-400">{usernameMsg}</p>}
+              {(profile.decisionCount ?? 0) > 0 && (
+                <p className="mt-1 flex items-center gap-1 text-xs text-muted">
+                  <Zap size={11} className="text-amber-400" />
+                  已拯救 {profile.decisionCount} 次选择困难症
+                </p>
+              )}
             </div>
           </div>