Restructure: Move 47 cv_* files into ocr/ package

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

klausur-service/backend/ocr/review/review.py

@@ -12,7 +12,7 @@ DATENSCHUTZ: Alle Verarbeitung erfolgt lokal.
 """
 
 # Re-export everything for backward compatibility
-from cv_review_pipeline import (  # noqa: F401
+from .pipeline import (  # noqa: F401
     ocr_region,
     run_multi_pass_ocr,
     match_lines_to_vocab,
@@ -20,7 +20,7 @@ from cv_review_pipeline import (  # noqa: F401
     run_cv_pipeline,
 )
 
-from cv_review_spell import (  # noqa: F401
+from .spell import (  # noqa: F401
     _SPELL_AVAILABLE,
     _spell_dict_knows,
     _spell_fix_field,
@@ -31,7 +31,7 @@ from cv_review_spell import (  # noqa: F401
     spell_review_entries_streaming,
 )
 
-from cv_review_llm import (  # noqa: F401
+from .llm import (  # noqa: F401
     OLLAMA_REVIEW_MODEL,
     REVIEW_ENGINE,
     _REVIEW_BATCH_SIZE,