refactor: standardize pagination response structure and enhance cursor handling

- Update various services and hooks to replace 'items' with 'list' for consistency in pagination responses.
- Modify PostRepository, commentService, groupService, messageService, and postService to align with the new response structure.
- Enhance cursor pagination logic in hooks and components to ensure proper handling of pagination states.
- Refactor HomeScreen, PostDetailScreen, SearchScreen, and other components to utilize the updated pagination structure.

src/data/repositories/PostRepository.ts

@@ -231,9 +231,12 @@ export class PostRepository implements IPostRepository {
     try {
       const queryParams: Record<string, any> = {};
 
-      if (params?.page) queryParams.page = params.page;
+      if (params?.page !== undefined) queryParams.page = params.page;
       if (params?.pageSize) queryParams.page_size = params.pageSize;
-      if (params?.cursor) queryParams.cursor = params.cursor;
+      // 支持 cursor 参数：空字符串也传递，用于启动 cursor 模式
+      if (params?.cursor !== undefined && params?.cursor !== null) {
+        queryParams.cursor = params.cursor;
+      }
       if (params?.post_type) queryParams.tab = params.post_type;
       if (params?.communityId) queryParams.community_id = params.communityId;
       if (params?.authorId) queryParams.author_id = params.authorId;
@@ -253,9 +256,16 @@ export class PostRepository implements IPostRepository {
         this.saveToLocalCache(post);
       });
 
+      // 计算 hasMore：优先使用 has_more，否则通过 page/total_pages 计算
+      let hasMore = response.has_more;
+      if (hasMore === undefined && response.page !== undefined && response.total_pages !== undefined) {
+        hasMore = response.page < response.total_pages;
+      }
+      hasMore = hasMore ?? false;
+
       return {
         posts,
-        hasMore: response.has_more ?? false,
+        hasMore,
         nextCursor: response.next_cursor,
         total: response.total,
       };