What problem does it solve? End-to-end tests often pass locally but fail in pipelines, silently skip coverage, or miss defects that only appear with accumulated UI state. This Skill encodes the rules for writing reliable Playwright e2e tests that actually catch production defects. ## Core Features & Use Cases - State-accumulation testing method: Explains why e2e tests must chain clicks without reloads, use qa-dataid selectors, and poll for state instead of reading on the next line. - Run commands and stands: Provides ready-made commands for running suites against a production build served behind real nginx via BASE_URL, including single-worker runs for admin suites sharing a live database. - Switch and coverage discipline: Distinguishes stand-state switches from environment-variable switches, and covers redirect assertions with maxRedirects: 0 plus a catalog of common failure modes. - Use Case: You need to reproduce a bug where a panel stays stuck after navigating between sections. Use this Skill to write a click-sequence Playwright test, raise the seeded stand, and run the suite against it. ## Quick Start Ask the assistant to write or fix an end-to-end test in the e2e suite and run it against the local stand using the provided nx e2e commands.