[BUGFIX]: Add missing React Error Boundaries to prevent app crashes

The application lacks React Error Boundaries, creating a critical gap in error handling that could result in complete application crashes from unhandled component errors.

**Technical Analysis**:
- **Current State**: No error boundary components found in codebase
- **Risk**: Any unhandled JavaScript error in React components causes the entire application to unmount and display a blank screen
- **User Impact**: Poor user experience with no graceful error recovery
- **Common Triggers**: Network failures, API errors, third-party library issues, unexpected data formats

**Missing Implementations**:
- Route-level error boundaries
- Component-level error boundaries for critical features
- Global error boundary wrapper
- Error reporting and logging mechanisms

**Affected Areas**: All React components, especially debate rooms, authentication, WebSocket connections