Test file updates: - Update import paths in test files: bookmann/internal → bookhoard/internal - Update test helper functions and references - Update test comments and documentation This is part 6 of the project rename to Bookhoard.
Add comprehensive WebSocket test coverage: - TestWebSocketConnection: Basic connection and JWT auth - TestWebSocketDeviceAuth: Device token authentication - TestWebSocketProgressBroadcast: Real-time update delivery - TestWebSocketPingPong: Heartbeat mechanism - TestWebSocketConnectionLimit: Multiple concurrent connections - TestWebSocketInvalidToken: Rejection of invalid tokens - Helper function for test media item creation Update test helpers to create ConnectionManager for tests. Tests verify WebSocket connection, authentication, and real-time progress broadcast functionality.