- Add Selenium WebDriver for browser extension testing
- Simplify test content script (only essential DOM attributes)
- Rename test-content-script.js → inner-test-content-script.js for clarity
- Add DEBUG_ prefix to test event name (DEBUG_rentgen_test_request)
- Auto-restore manifest.json after tests (git checkout)
- Include tests in run-checks.sh script
- Update Dockerfile to use Selenium instead of Marionette
- Ignore tests directory in web-ext lint
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
