station-e2e-qa

Use when validating the Station canvas dashboard end to end — renderer health (WebGPU/fps/frame pacing), agentic canvas interaction via station.debug_json()/station.activate(), and the perf regression gate — with scripts/validate-dashboard.cjs on a headless CI-style box or a headed GPU host. Covers environment setup, the dual-GPU Chromium recipe, headless gate vs headed acceptance invocations, the…