refactor(navigation): consolidate navigation with href helpers and extract push device hook

- Migrate all navigation calls from magic strings to centralized href helpers
- Extract inline device registration logic into useRegisterPushDevice hook
- Remove unused terms and privacy policy routes from profile stack
- Add hrefTradeDetail helper for trade detail navigation
- Restore routePayloadCache.stashSystemMessage for group request/invite handling
- Change desktop shell tab navigation from replace to push

src/app-navigation/AppDesktopShell.tsx

@@ -172,7 +172,7 @@ export function AppDesktopShell() {
 
   const handleTabChange = useCallback(
     (href: string) => {
-      router.replace(href);
+      router.push(href);
     },
     [router]
   );

src/components/business/PostRefCard.tsx

@@ -6,6 +6,7 @@ import { useRouter } from 'expo-router';
 import Text from '../common/Text';
 import { useAppColors, spacing, borderRadius } from '../../theme';
 import type { PostRefSegmentData } from '../../types';
+import * as hrefs from '../../navigation/hrefs';
 
 interface PostRefCardProps {
   data: PostRefSegmentData;
@@ -21,7 +22,7 @@ const PostRefCard: React.FC<PostRefCardProps> = ({ data, compact = false, onPres
     if (onPress) {
       onPress(data.post_id);
     } else {
-      router.push(`/post/${data.post_id}` as any);
+      router.push(hrefs.hrefPostDetail(data.post_id));
     }
   }, [data.post_id, onPress, router]);
 

src/hooks/index.ts

@@ -70,6 +70,9 @@ export { useMediaCache } from './useMediaCache';
 
 export type { UseMediaCacheReturn } from './useMediaCache';
 
+// ==================== 推送设备注册 Hook ====================
+export { useRegisterPushDevice } from './useRegisterPushDevice';
+
 // ==================== 差异更新 Hooks ====================
 export { useDifferentialMessages } from './useDifferentialMessages';
 

src/hooks/useRegisterPushDevice.ts

@@ -0,0 +1,29 @@
+import { useEffect, useRef } from 'react';
+import { Platform } from 'react-native';
+
+import { jpushService } from '../services/notification/jpushService';
+
+export function useRegisterPushDevice(isAuthenticated: boolean, userID?: string) {
+  const deviceRegistered = useRef(false);
+
+  useEffect(() => {
+    if (Platform.OS === 'web' || !isAuthenticated || !userID) return;
+
+    if (!deviceRegistered.current) {
+      deviceRegistered.current = true;
+
+      jpushService.initialize().then((ok) => {
+        if (ok && userID) {
+          jpushService.setAliasForUser(userID);
+        }
+      });
+    }
+
+    return () => {
+      if (!isAuthenticated) {
+        deviceRegistered.current = false;
+        jpushService.cleanup();
+      }
+    };
+  }, [isAuthenticated, userID]);
+}

src/navigation/hrefs.ts

@@ -2,13 +2,16 @@
  * Expo Router 路径构建（单一事实来源，避免魔法字符串散落）
  */
 import type { SystemMessageResponse } from '../types/dto';
-import { routePayloadCache } from '../stores';
 
 export function hrefPostDetail(postId: string, scrollToComments?: boolean): string {
   const q = scrollToComments ? '?scrollToComments=1' : '';
   return `/post/${encodeURIComponent(postId)}${q}`;
 }
 
+export function hrefTradeDetail(tradeId: string): string {
+  return `/trade/${encodeURIComponent(tradeId)}`;
+}
+
 export function hrefUserProfile(userId: string): string {
   return `/user/${encodeURIComponent(userId)}`;
 }
@@ -124,12 +127,10 @@ export function hrefGroupMembers(groupId: string): string {
 }
 
 export function hrefGroupRequestDetail(message: SystemMessageResponse): string {
-  routePayloadCache.stashSystemMessage(message);
   return `/group/request?messageId=${encodeURIComponent(message.id)}`;
 }
 
 export function hrefGroupInviteDetail(message: SystemMessageResponse): string {
-  routePayloadCache.stashSystemMessage(message);
   return `/group/invite?messageId=${encodeURIComponent(message.id)}`;
 }
 

src/screens/home/HomeScreen.tsx

@@ -716,7 +716,7 @@ export const HomeScreen: React.FC = () => {
   // 跳转到发帖页面（使用 Modal 方式）
   const handleCreatePost = () => {
     if (!isAuthenticated) {
-      router.push('/login');
+      router.push(hrefs.hrefAuthLogin());
       return;
     }
     if (!isVerified) {
@@ -1052,7 +1052,7 @@ export const HomeScreen: React.FC = () => {
           floatingButtonBottom !== undefined && { bottom: floatingButtonBottom },
         ]}
         onPress={homeTab === 'market' ? () => {
-          if (!isAuthenticated) { router.push('/login'); return; }
+          if (!isAuthenticated) { router.push(hrefs.hrefAuthLogin()); return; }
           if (!isVerified) { router.push(hrefs.hrefVerificationGuide()); return; }
           setShowCreateTrade(true);
         } : handleCreatePost}

src/screens/home/MarketView.tsx

@@ -14,6 +14,7 @@ import type {
 } from '../../types/trade';
 import { useRouter } from 'expo-router';
 import { useResponsive, useResponsiveSpacing } from '../../hooks';
+import * as hrefs from '../../navigation/hrefs';
 
 type TradeFilterType = 'all' | 'sell' | 'buy';
 
@@ -137,7 +138,7 @@ export function MarketView({
   }, [isLoadingMore, hasMore, cursor, filterType, selectedCategory]);
 
   const handlePressItem = useCallback((id: string) => {
-    router.push(`/trade/${id}` as any);
+    router.push(hrefs.hrefTradeDetail(id));
   }, [router]);
 
   const handleFavorite = useCallback(async (id: string) => {

src/screens/home/SearchScreen.tsx

@@ -472,7 +472,7 @@ export const SearchScreen: React.FC<SearchScreenProps> = ({ onBack, homeTab = 's
             <TradeCard
               item={item}
               variant="list"
-              onPress={(id) => router.push(`/trade/${id}` as any)}
+              onPress={(id) => router.push(hrefs.hrefTradeDetail(id))}
             />
           </View>
         )}

src/screens/message/NotificationsScreen.tsx

@@ -38,7 +38,7 @@ import { SystemMessageItem } from '../../components/business';
 import { Text, ResponsiveContainer, AppBackButton } from '../../components/common';
 import { useCursorPagination } from '../../hooks/useCursorPagination';
 import * as hrefs from '../../navigation/hrefs';
-import { useMessageManagerSystemUnreadCount } from '../../stores';
+import { useMessageManagerSystemUnreadCount, routePayloadCache } from '../../stores';
 import { messageManager } from '../../stores/message';
 
 const MESSAGE_TYPES = [
@@ -331,8 +331,10 @@ export const NotificationsScreen: React.FC<{ onBack?: () => void }> = ({ onBack
           router.push(hrefs.hrefUserProfile(extra_data.actor_id_str));
         }
       } else if (system_type === 'group_join_apply') {
+        routePayloadCache.stashSystemMessage(message);
         router.push(hrefs.hrefGroupRequestDetail(message));
       } else if (system_type === 'group_invite') {
+        routePayloadCache.stashSystemMessage(message);
         router.push(hrefs.hrefGroupInviteDetail(message));
       }
       // 其他类型暂不处理跳转