feat(personal): 持久化开发者模式状态并优化登录后数据加载

- 新增 kv-store 持久化开发者模式开关，避免每次冷启动丢失
- 登录成功后立即拉取用户资料，减少首页空数据闪烁
- 修复体重卡片在未登录时重复请求的问题
- 移除 ActivityHeatMap 与 userSlice 中的调试日志
- useAuthGuard 增加 token 调试输出（临时）

components/weight/WeightHistoryCard.tsx

@@ -34,7 +34,7 @@ export function WeightHistoryCard() {
   const [showBMIModal, setShowBMIModal] = useState(false);
 
 
-  const { pushIfAuthedElseLogin } = useAuthGuard();
+  const { pushIfAuthedElseLogin, isLoggedIn } = useAuthGuard();
   const colorScheme = useColorScheme();
   const themeColors = Colors[colorScheme ?? 'light'];
 
@@ -42,14 +42,12 @@ export function WeightHistoryCard() {
 
 
   useEffect(() => {
-    if (hasWeight) {
-      loadWeightHistory();
-    }
-  }, [userProfile?.weight]);
+    loadWeightHistory();
+  }, [userProfile?.weight, isLoggedIn]);
 
   const loadWeightHistory = async () => {
     try {
-      await dispatch(fetchWeightHistory() as any);
+      await dispatch(fetchWeightHistory() as any).unwrap();
     } catch (error) {
       console.error('加载体重历史失败:', error);
     }