panic-on-rails

High-fidelity frontend testing and visual debugging for the panic-on-rails train-track planner/simulator (React 19 + React-Konva + Zustand). Use whenever writing or debugging Playwright/E2E tests, verifying UI changes visually, capturing screenshots, doing visual regression, testing the requestAnimationFrame simulation deterministically, or using the debug bridge, store bridge, Playwright MCP, or Playwright Test Agents. Trigger on: e2e test, Playwright, visual test, screenshot, visual regression, snapshot, simulation test, deterministic test, Clock API, flaky test, debug bridge, store bridge, agentic testing, headless browser test, "smoke test", "verify in a browser", "check the canvas", consistency check.