Replace path repository with VCS pointing to
git.stadtmission-butzbach.de/public/propresenter-php.git.
Add use_local_pp_lib.sh to toggle between remote and local checkout.
Fix test fixture paths after repo restructure (ref/ → doc/reference_samples/).
- Update propresenter ref path from ../propresenter-work/ to ../propresenter/
- Fix ProFileImportTest assertion for CCLI-based upsert behavior
- Replace Mockery alias mocks with testable subclass pattern in
PlaylistExportTest, eliminating @runInSeparateProcess requirement
- Use DI (app()) for PlaylistExportService in controller for testability
- All 302 tests pass (was 285 pass + 17 fail)