lichtblick

Domain knowledge for Playwright MCP-assisted E2E test development in Lichtblick. Covers test architecture, fixture reference, selector strategy, page objects, MCP usage, and source instrumentation patterns.

Deep WebSocket connection knowledge: FoxgloveWebSocketPlayer state machine, WorkerSocketAdapter postMessage protocol, the Foxglove WebSocket protocol handshake, RAF-based state emission, and reconnection.

Shared test conventions for all testing agents in the Lichtblick repo. Defines GWT pattern, core quality rules, and the standard test-writing workflow.