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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "with_you",
-  "version": "0.1.sha",
+  "version": "0.0.1",
   "main": "expo-router/entry",
   "scripts": {
     "start": "expo start",