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chrome-extension-e2e-playwright

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UpdatedApril 8, 2026 at 16:47

Playwright E2E testing guide for Chrome extensions. Covers extension loading, MV3 Service Worker startup, page.evaluate() serialization boundary, chrome.storage test access, Shadow DOM interaction, iframe throttling, fixture design, and failure diagnostics. Use this skill only when writing, debugging, or stabilizing Playwright E2E tests for Chrome extensions. Do not use it for manual browser verification; use `agent-browser` or the project-specific `ylc-agent-browser` skill when the task is to open the site and inspect real browser behavior.

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