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/zeugnis/__init__.py

@@ -2,5 +2,5 @@
 zeugnis package — certificate crawler, models, storage.
 
 Backward-compatible re-exports: consumers can still use
-``from zeugnis_api import ...`` etc. via the shim files in backend/.
+``from zeugnis.api import ...`` etc. via the shim files in backend/.
 """

klausur-service/backend/zeugnis/api_docs.py

@@ -16,7 +16,7 @@ from .models import (
 from .crawler import (
     start_crawler, stop_crawler, get_crawler_status,
 )
-from metrics_db import (
+from metrics.db import (
     get_zeugnis_documents, get_zeugnis_stats,
     log_zeugnis_event, get_pool,
 )

klausur-service/backend/zeugnis/api_sources.py

@@ -15,7 +15,7 @@ from .models import (
     BUNDESLAENDER,
     generate_id, get_training_allowed, get_bundesland_name, get_license_for_bundesland,
 )
-from metrics_db import (
+from metrics.db import (
     get_zeugnis_sources, upsert_zeugnis_source, get_pool,
 )
 

klausur-service/backend/zeugnis/control.py

@@ -31,7 +31,7 @@ async def start_crawler(bundesland: Optional[str] = None, source_id: Optional[st
 
     async def run_crawler():
         try:
-            from metrics_db import get_pool
+            from metrics.db import get_pool
             pool = await get_pool()
 
             if pool:

klausur-service/backend/zeugnis/seed_data.py

@@ -322,8 +322,8 @@ SEED_DATA: Dict[str, Dict[str, Any]] = {
 
 async def populate_seed_data():
     """Populate database with seed data."""
-    from metrics_db import get_pool, upsert_zeugnis_source
-    from zeugnis_models import generate_id
+    from metrics.db import get_pool, upsert_zeugnis_source
+    from zeugnis.models import generate_id
 
     pool = await get_pool()
     if not pool:
@@ -412,4 +412,4 @@ if __name__ == "__main__":
 
     print("\n" + "=" * 60)
     print("To populate database, run:")
-    print("  python -c 'import asyncio; from zeugnis_seed_data import populate_seed_data; asyncio.run(populate_seed_data())'")
+    print("  python -c 'import asyncio; from zeugnis.seed_data import populate_seed_data; asyncio.run(populate_seed_data())'")

klausur-service/backend/zeugnis/worker.py

@@ -83,7 +83,7 @@ class ZeugnisCrawler:
 
         # Initialize database connection
         try:
-            from metrics_db import get_pool
+            from metrics.db import get_pool
             self.db_pool = await get_pool()
         except Exception as e:
             print(f"Failed to get database pool: {e}")