Fix: Update all old-style imports inside packages to new paths

65 files in klausur-service packages + 3 in backend-lehrer packages
had stale imports referencing deleted shim modules.

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

klausur-service/backend/grid/build/finalize.py

@@ -69,14 +69,14 @@ def _finalize_grid(
 
     # --- Word-gap merge ---
     try:
-        from cv_syllable_detect import merge_word_gaps_in_zones
+        from ocr.detect.syllable.detect import merge_word_gaps_in_zones
         merge_word_gaps_in_zones(zones_data, session_id)
     except Exception as e:
         logger.warning("Word-gap merge failed: %s", e)
 
     # --- Pipe auto-correction ---
     try:
-        from cv_syllable_detect import autocorrect_pipe_artifacts
+        from ocr.detect.syllable.detect import autocorrect_pipe_artifacts
         autocorrect_pipe_artifacts(zones_data, session_id)
     except Exception as e:
         logger.warning("Pipe autocorrect failed: %s", e)
@@ -132,10 +132,10 @@ def _detect_dictionary(
     margin_strip_detected: bool,
 ) -> Dict[str, Any]:
     """Run dictionary detection on the assembled grid."""
-    from cv_layout import _score_dictionary_signals
+    from ocr.layout.layout import _score_dictionary_signals
     dict_detection: Dict[str, Any] = {"is_dictionary": False, "confidence": 0.0}
     try:
-        from cv_vocab_types import ColumnGeometry
+        from ocr.types import ColumnGeometry
         for z in zones_data:
             zone_cells = z.get("cells", [])
             zone_cols = z.get("columns", [])
@@ -222,7 +222,7 @@ def _insert_syllable_dividers(
 
     if _syllable_eligible:
         try:
-            from cv_syllable_detect import insert_syllable_dividers
+            from ocr.detect.syllable.detect import insert_syllable_dividers
             force_syllables = (syllable_mode in ("all", "de", "en"))
             syllable_insertions = insert_syllable_dividers(
                 zones_data, img_bgr, session_id,
@@ -241,7 +241,7 @@ def _split_merged_words(
 ) -> None:
     """Split merged words using dictionary lookup."""
     try:
-        from cv_review import _try_split_merged_word, _SPELL_AVAILABLE
+        from ocr.review.review import _try_split_merged_word, _SPELL_AVAILABLE
         if not _SPELL_AVAILABLE:
             return
         split_count = 0
@@ -307,7 +307,7 @@ def _run_spell_checker(
 ) -> None:
     """Run SmartSpellChecker on all cells."""
     try:
-        from smart_spell import SmartSpellChecker
+        from ocr.spell.smart_spell import SmartSpellChecker
         _ssc = SmartSpellChecker()
         spell_fix_count = 0