Initial commit - Phase 3/4

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/backend/websocket/__init__.py

@@ -0,0 +1,6 @@
+"""WebSocket module for real-time notifications."""
+from .manager import ws_manager, ConnectionManager
+from .routes import router
+from . import notifications
+
+__all__ = ["ws_manager", "ConnectionManager", "router", "notifications"]