Use when building, debugging, migrating, or shipping a browser extension with WXT. Covers project bootstrap, WXT entrypoints, manifest config, browser targets, dev mode, ZIP/release flow, and WXT-specific gotchas like dynamic content scripts or background/content entrypoints being imported in Node during build. Prefer skill "tailwindcss" for styling-only work. Not for plain Vite apps or non-extension browser code.
