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

metro.config.js

@@ -29,13 +29,37 @@ const webShimPaths = [
   'react-native/Libraries/Utilities/codegenNativeComponent',
   'react-native/Libraries/Utilities/codegenNativeCommands',
   'react-native/Libraries/Types/CodegenTypes',
+  'react-native/Libraries/ReactNative/requireNativeComponent',
 ];
 
+// Packages that should be entirely replaced with web shims on web platform.
+// These packages import requireNativeComponent directly from 'react-native'
+// (which resolves to react-native-web on web) and don't have web implementations.
+const webPackageShims = {
+  'react-native-webrtc': path.resolve(__dirname, 'web-shims/react-native-webrtc/index.js'),
+};
+
 const originalResolveRequest = config.resolver.resolveRequest;
 const shimDir = path.resolve(__dirname, 'web-shims');
 
 config.resolver.resolveRequest = (context, moduleName, platform) => {
+  // Redirect entire native-only packages to web shims
+  if (platform === 'web' && webPackageShims[moduleName]) {
+    return {
+      type: 'sourceFile',
+      filePath: webPackageShims[moduleName],
+    };
+  }
+
+  // Redirect specific React Native internal modules to web shims
   if (platform === 'web' && webShimPaths.some((p) => moduleName.endsWith(p))) {
+    // For requireNativeComponent, the path doesn't follow the Libraries/* pattern
+    if (moduleName.endsWith('react-native/Libraries/ReactNative/requireNativeComponent')) {
+      return {
+        type: 'sourceFile',
+        filePath: path.join(shimDir, 'react-native', 'Libraries', 'ReactNative', 'requireNativeComponent.js'),
+      };
+    }
     const shimName = moduleName.replace('react-native/Libraries/', '');
     return {
       type: 'sourceFile',