Initial commit: Bifrost accessible fediverse client

- Full ActivityPub support for Pleroma, GoToSocial, and Mastodon
- Screen reader optimized interface with PySide6
- Timeline switching with tabs and keyboard shortcuts (Ctrl+1-4)
- Threaded conversation navigation with expand/collapse
- Cross-platform desktop notifications via plyer
- Customizable sound pack system with audio feedback
- Complete keyboard navigation and accessibility features
- XDG Base Directory compliant configuration
- Multiple account support with OAuth authentication

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

bifrost.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+
+"""
+Bifrost - Accessible Fediverse Client
+A fully accessible ActivityPub client designed for screen reader users.
+"""
+
+import sys
+import os
+from pathlib import Path
+
+# Add src directory to Python path
+sys.path.insert(0, str(Path(__file__).parent / "src"))
+
+from PySide6.QtWidgets import QApplication
+from PySide6.QtCore import Qt
+from main_window import MainWindow
+
+def main():
+    """Main application entry point"""
+    app = QApplication(sys.argv)
+    app.setApplicationName("Bifrost")
+    app.setApplicationDisplayName("Bifrost Fediverse Client")
+    app.setApplicationVersion("1.0.0")
+    app.setOrganizationName("Bifrost")
+    app.setOrganizationDomain("bifrost.social")
+    
+    # High DPI scaling is enabled by default in newer Qt versions
+    
+    # Create and show main window
+    window = MainWindow()
+    window.show()
+    
+    # Run the application
+    sys.exit(app.exec())
+
+if __name__ == "__main__":
+    main()