fix(e7): CI-Gate-Vorbereitung — ruff über app/ von 105 auf 0 Findings bereinigt; 8 echte F821-NameError-Produktionsbugs behoben (external_api stream_chat-Call-Signatur an stream_chat_comm angepasst, agent_runner uuid vor lokalem Import, automation/plugin UserTenant-Import, tasks delete-audit user_id, workflows/engine timedelta, unified_search/contracts Any); py311-kompatibles StepHandler-Alias statt type-Statement; E402/F841 bereinigt; Verifikation 85/89 grün (4 Failures = bekannter Vorbestand BUG-099)

app/ai/agent_permissions.py

@@ -17,7 +17,7 @@ from __future__ import annotations
 
 import logging
 import uuid
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Any
 
 from sqlalchemy import select

app/ai/context_builder.py

@@ -25,8 +25,6 @@ import logging
 import uuid
 from typing import TYPE_CHECKING, Any
 
-from app.core.sensitive_data import sanitize_dict
-
 if TYPE_CHECKING:
     from sqlalchemy.ext.asyncio import AsyncSession
 

app/ai/data_policy.py

@@ -20,8 +20,6 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.ai.ai_use_case import AIUseCaseMetadata
 from app.core.sensitive_data import (
     SENSITIVE_FIELDS,
-    filter_for_llm_context,
-    get_data_class_for_field,
 )
 
 logger = logging.getLogger(__name__)

app/ai/knowledge_extraction.py

@@ -6,7 +6,6 @@ import uuid
 from dataclasses import dataclass, field
 from typing import Any
 
-
 LOW_CONFIDENCE_THRESHOLD = 0.6
 
 

app/ai/knowledge_lifecycle.py

@@ -7,7 +7,6 @@ from typing import Any
 
 from app.ai.knowledge_sources import get_source_config
 
-
 EXTRACTION_TRIGGERS = {
     "mail.received",
     "dms.file_uploaded",

app/ai/knowledge_sources.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Any