- add make target test-integration and run it in reusable CI workflow
- add integration unittest covering _page_warnings stderr output + deduplication
- surface Matomo installer warnings during Playwright flow (stderr only)
https://chatgpt.com/share/694c1371-365c-800f-bdf8-ede2e850e648
- Replace bootstrap wrapper with config-driven service orchestration
- Introduce Config dataclass for centralized env/CLI validation
- Add MatomoApi service for session login + app token creation
- Move Playwright installer into installers/web and drop old install package
- Refactor HttpClient to unify HTTP handling and debug to stderr
- Make E2E tests use sys.executable instead of hardcoded python3
