Plans, generates, runs, and heals end-to-end tests using Playwright Test Agents (Planner, Generator, Healer) and the official `@playwright/mcp` server. Drives a spec-first feature-flow loop, proposes `data-testid` source diffs only when accessibility-tree locators fail, and stays token-aware via snapshot mode and `--last-failed` reruns. Use when adding E2E coverage, verifying a user journey, hardening a flaky flow, or wiring Playwright MCP into a repo. Triggers on "test this flow", "add e2e", "verify the user journey", "write e2e test", "feature test", "playwright agents", "/e2e-testing".