fix(api): F821-Regression in 6 weiteren Route-Dateien beheben

Gleiche Wurzel wie evidence_routes (Extract-Service-Refactor a638d0e5 ff.):
Signaturen/Imports halb umgestellt → undefined names → NameError beim Aufruf.

- routes.py: db-Param in get_control/update_control/review_control + EvidenceDB-Import
- dsfa_routes.py: db-Param in create_dsfa + HTTPException/text-Import
- dashboard_routes.py: timezone-Import
- canonical_control_routes.py: logger-Definition
- ai_routes.py: timezone in den lokalen datetime-Imports
- vvt_routes.py: HTTPException-Import

Verifiziert: ruff F821 0 über das gesamte compliance/api/, alle 6 py_compile,
294 Tests grün auf den betroffenen Modulen (die 2 dsfa-invalid-status/risk-Failures
sind vorbestehend = 400-vs-422, unabhängig von diesem Fix).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend-compliance/compliance/api/ai_routes.py

@@ -162,7 +162,7 @@ async def update_ai_system(
     db: Session = Depends(get_db),
 ):
     """Update an AI system."""
-    from datetime import datetime
+    from datetime import datetime, timezone
 
     system = db.query(AISystemDB).filter(AISystemDB.id == system_id).first()
     if not system:
@@ -226,7 +226,7 @@ async def assess_ai_system(
     db: Session = Depends(get_db),
 ):
     """Run AI Act risk assessment for an AI system."""
-    from datetime import datetime
+    from datetime import datetime, timezone
 
     system = db.query(AISystemDB).filter(AISystemDB.id == system_id).first()
     if not system:

backend-compliance/compliance/api/canonical_control_routes.py

@@ -47,6 +47,8 @@ from compliance.services.canonical_control_service import (
     _control_row,  # re-exported for legacy test imports
 )
 
+logger = logging.getLogger(__name__)
+
 router = APIRouter(prefix="/v1/canonical", tags=["canonical-controls"])
 
 

backend-compliance/compliance/api/dashboard_routes.py

@@ -14,7 +14,7 @@ Endpoints:
 """
 
 import logging
-from datetime import datetime, date, timedelta
+from datetime import datetime, date, timedelta, timezone
 from calendar import month_abbr
 from typing import Optional, Dict, Any, List
 from decimal import Decimal

backend-compliance/compliance/api/dsfa_routes.py

@@ -26,10 +26,11 @@ versions). Module-level helpers re-exported for legacy tests.
 import logging
 from typing import Any, List, Optional
 
-from fastapi import APIRouter, Depends, Query
+from fastapi import APIRouter, Depends, HTTPException, Query
 from pydantic import BaseModel
 from fastapi.responses import Response
 from sqlalchemy.orm import Session
+from sqlalchemy import text
 
 from classroom_engine.database import get_db
 from compliance.api._http_errors import translate_domain_errors
@@ -484,6 +485,7 @@ async def list_dsfas(
 async def create_dsfa(
     request: DSFACreate,
     tenant_id: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
     service: DSFAService = Depends(get_dsfa_service),
 ) -> dict[str, Any]:
     """Neue DSFA erstellen."""

backend-compliance/compliance/api/routes.py

@@ -24,6 +24,7 @@ from fastapi.responses import FileResponse
 from sqlalchemy.orm import Session
 
 from classroom_engine.database import get_db
+from ..db.models import EvidenceDB
 
 from .audit_trail_utils import log_audit_trail
 from ..db import (
@@ -310,6 +311,7 @@ async def list_controls_paginated(
 )
 async def get_control(
     control_id: str,
+    db: Session = Depends(get_db),
     svc: ControlExportService = Depends(get_ctrl_export_service),
 ) -> ControlResponse:
     """Get a specific control by control_id."""
@@ -354,6 +356,7 @@ async def get_control(
 async def update_control(
     control_id: str,
     update: ControlUpdate,
+    db: Session = Depends(get_db),
     svc: ControlExportService = Depends(get_ctrl_export_service),
 ) -> ControlResponse:
     """Update a control."""
@@ -443,6 +446,7 @@ async def update_control(
 async def review_control(
     control_id: str,
     review: ControlReviewRequest,
+    db: Session = Depends(get_db),
     svc: ControlExportService = Depends(get_ctrl_export_service),
 ) -> ControlResponse:
     """Mark a control as reviewed with new status."""

backend-compliance/compliance/api/vvt_routes.py

@@ -21,7 +21,7 @@ Phase 1 Step 4 refactor: handlers delegate to VVTService.
 import logging
 from typing import Any, List, Optional
 
-from fastapi import APIRouter, Depends, Query, Request
+from fastapi import APIRouter, Depends, HTTPException, Query, Request
 from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session