Playwright E2E Testing Toolkit

Complete end-to-end testing toolkit built on Playwright. Includes production-ready config, Page Object Model architecture, custom fixtures, and battle-tested patterns for every common scenario: CRUD flows, form validation, file uploads, drag-and-drop, multi-tab, API mocking, and visual regression testing. Covers authentication setup (login once, reuse state across tests), CI/CD integration with GitHub Actions, trace-based debugging for CI failures, and a systematic guide to diagnosing and fixing flaky tests. 16KB of ready-to-use code patterns — not theory, not docs links, actual working TypeScript you can drop into any web project.