feat: Add comprehensive PWA support with offline functionality

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- Add manifest.json with full PWA configuration
  - Support for installation on all platforms (iOS, Android, Desktop)
  - Custom app icons (72x72 to 512x512) with maskable support
  - App shortcuts for quick actions (Create/Join Channel)
  - Protocol handlers for web+securebit:// links
  - Share target integration

- Implement enhanced Service Worker (v4.0)
  - Smart caching strategies (cache-first, network-first, stale-while-revalidate)
  - Security-aware caching (excludes sensitive endpoints)
  - Background sync for failed requests
  - Offline fallbacks with custom error handling
  - Response cloning fixes and CORS handling

- Add PWA Install Prompt Manager
  - Cross-platform install detection and prompts
  - iOS Safari specific installation guide
  - Smart dismissal logic with retry mechanisms
  - Install success notifications and user guidance
  - Persistent install preferences with localStorage

- Implement comprehensive Offline Manager
  - IndexedDB for offline data persistence
  - Automatic message queuing and sync when online
  - Session state recovery after connection loss
  - WebRTC reconnection handling
  - Real-time connection status indicators
  - Offline guidance and help system

- Add offline-first features
  - Message queue with priority and retry logic
  - Session data preservation during disconnection
  - Application state recovery
  - Background sync registration
  - Periodic cleanup of old offline data

- Enhanced user experience
  - Connection status notifications
  - Offline mode guidance and help
  - Automatic sync notifications
  - Reconnection progress indicators
  - Platform-specific installation instructions

This implementation ensures SecureBit.chat works seamlessly offline while maintaining security and providing a native app-like experience across all platforms.

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This commit is contained in:

lockbitchat

2025-08-17 16:04:45 -04:00

parent adb1844392

commit 3c25b4565d

122 changed files with 3095 additions and 6 deletions

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