refactor(ImageGallery, HomeScreen, PostService, UserStore): streamline post type handling and improve tab navigation

- Updated ImageGallery to manage loading states more effectively and prevent unnecessary updates.
- Refactored HomeScreen to remove the 'recommend' post type, simplifying the post type options.
- Adjusted PostService and UserStore to eliminate references to 'recommend', ensuring consistency across the application.
- Enhanced tab navigation in SimpleMobileTabNavigator to optimize rendering and manage mounted tabs more efficiently.
- Improved error handling and loading states in various components for better user experience.

src/screens/home/HomeScreen.tsx

@@ -41,8 +41,8 @@ import { navigationService } from '../../infrastructure/navigation/navigationSer
 
 type NavigationProp = NativeStackNavigationProp<HomeStackParamList, 'Home'> & NativeStackNavigationProp<RootStackParamList>;
 
-const TABS = ['推荐', '关注', '热门', '最新'];
-const TAB_ICONS = ['compass-outline', 'account-heart-outline', 'fire', 'clock-outline'];
+const TABS = ['最新', '关注', '热门'];
+const TAB_ICONS = ['clock-outline', 'account-heart-outline', 'fire'];
 const DEFAULT_PAGE_SIZE = 20;
 const SWIPE_TRANSLATION_THRESHOLD = 40;
 const SWIPE_COOLDOWN_MS = 300;
@@ -51,7 +51,7 @@ const MOBILE_TAB_FLOATING_MARGIN = 12;
 const MOBILE_FAB_GAP = 12;
 
 type ViewMode = 'list' | 'grid';
-type PostType = 'recommend' | 'follow' | 'hot' | 'latest';
+type PostType = 'follow' | 'hot' | 'latest';
 
 export const HomeScreen: React.FC = () => {
   const navigation = useNavigation<NavigationProp>();
@@ -106,11 +106,10 @@ export const HomeScreen: React.FC = () => {
   // 获取当前 tab 对应的帖子类型
   const getPostType = useCallback((): PostType => {
     switch (activeIndex) {
-      case 0: return 'recommend';
+      case 0: return 'latest';
       case 1: return 'follow';
       case 2: return 'hot';
-      case 3: return 'latest';
-      default: return 'recommend';
+      default: return 'latest';
     }
   }, [activeIndex]);