Dropbox Sync Improvements:
- Change PKCE alerts to thrown errors for better error handling
- Add provider ID to sync auth error logs for debugging
- Improve PKCE error message to guide users to HTTPS requirement
- Add unit tests for PKCE code generation
Testing Improvements:
- Enhance wait-for-supersync.sh to check both health and test endpoints
- Match E2E fixture behavior for more reliable test startup detection
These changes improve error diagnostics and provide clearer guidance
when WebCrypto APIs are unavailable (HTTP contexts).
Modify e2e:docker:all to run all 360+ E2E tests including @supersync tests.
- Start all required services (app, webdav, db, supersync)
- Add wait-for-supersync.sh for SuperSync health check
- Execute tests in two phases:
- Phase 1: Non-supersync tests (default workers)
- Phase 2: SuperSync tests (3 workers to avoid server overload)
- Both phases run independently; exit code reflects first failure
- Previously skipped 131 @supersync tests now included
Resolves complete E2E test coverage for all sync providers.
