feat(content): add rich content rendering with @mentions and vote segments

- Add PostContentRenderer component for rendering posts/comments with segments
- Add PostMentionInput component for @mention support in post/comment creation
- Add VoteSegmentData and vote segment type for unified post creation API
- Update post and comment services to support segments in API requests
- Fix auth service to clear tokens before login/register
- Improve database initialization with proper close/retry logic
- Add verification check before allowing post creation
- Add metro web shims for react-native-webrtc full package and requireNativeComponent
- Update build config with git hash based version numbers

src/services/post/voteService.ts

@@ -4,7 +4,7 @@
  */
 
 import { api } from '../core/api';
-import { Post, VoteResultDTO, CreateVotePostRequest } from '@/types';
+import { Post, VoteResultDTO, CreateVotePostRequest, MessageSegment } from '@/types';
 
 // 投票响应
 interface VoteResponse {
@@ -23,12 +23,9 @@ interface UpdateVoteOptionResponse {
  */
 class VoteService {
   /**
-   * 创建投票帖子
-   * @param data 创建投票帖子请求数据
-   * @returns 创建的帖子或null
+   * 创建投票帖子（通过统一的 POST /posts 接口，投票选项作为 vote segment）
    */
   async createVotePost(data: CreateVotePostRequest): Promise<Post | null> {
-    // 验证投票选项数量
     if (!data.vote_options || data.vote_options.length < 2) {
       console.error('[VoteService] 投票选项至少需要2个');
       return null;
@@ -38,7 +35,30 @@ class VoteService {
       return null;
     }
 
-    const response = await api.post<Post>('/posts/vote', data);
+    // 构建 segments：先放文本内容，再放投票 segment
+    const segments: MessageSegment[] = [];
+    if (data.content) {
+      segments.push({ type: 'text', data: { text: data.content } });
+    }
+    segments.push({
+      type: 'vote',
+      data: {
+        options: data.vote_options.map((opt, i) => ({
+          id: `opt_${i + 1}`,
+          content: typeof opt === 'string' ? opt : opt.content,
+        })),
+        max_choices: 1,
+        is_multi_choice: false,
+      },
+    });
+
+    const response = await api.post<Post>('/posts', {
+      title: data.title,
+      content: data.content || '',
+      segments,
+      images: data.images,
+      channel_id: data.channel_id,
+    });
     return response.data;
   }