Task 8 evidence: German local labels pair with English CCLI labels.

Command run:
ddev exec php artisan test --filter=CcliTranslationPairingServiceTest

Relevant passing test:
✓ pairs German local labels with English CCLI labels via normalization

Observed assertions in tests/Feature/CcliTranslationPairingServiceTest.php:
- Local "Strophe 1" normalizes to canonical "verse 1" and matches CCLI "Verse 1".
- Local "Refrain" normalizes to canonical "chorus" and matches CCLI "Chorus".
- unmatched_labels is empty.
- mapping has three entries.

Full targeted result:
Tests: 5 passed (20 assertions)
Duration: 0.46s