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/plugins/builtins/knowledge/plugin.py

@@ -1,8 +1,10 @@
 """Knowledge plugin — LLM-based entity/relationship extraction, ask-knowledge, review queue."""
 from __future__ import annotations
+
 import logging
 import uuid
 from typing import Any
+
 from app.plugins.base import BasePlugin
 from app.plugins.manifest import PluginManifest, PluginRouteDef
 
@@ -78,8 +80,8 @@ class KnowledgePlugin(BasePlugin):
 
         async def _ask_knowledge_handler(arguments: dict[str, Any], context: dict[str, Any]) -> dict[str, Any]:
             """Ask a knowledge question."""
-            from app.plugins.builtins.knowledge.services import ask_knowledge
             from app.core.db import get_worker_session_factory
+            from app.plugins.builtins.knowledge.services import ask_knowledge
             question = arguments.get("question", "")
             tenant_id = context.get("tenant_id")
             if not question or not tenant_id:
@@ -107,8 +109,8 @@ class KnowledgePlugin(BasePlugin):
 
         async def _search_knowledge_handler(arguments: dict[str, Any], context: dict[str, Any]) -> dict[str, Any]:
             """Search wiki articles via unified search."""
-            from app.plugins.builtins.unified_search.provider_registry import get_search_registry
             from app.core.db import get_worker_session_factory
+            from app.plugins.builtins.unified_search.provider_registry import get_search_registry
             query = arguments.get("query", "")
             tenant_id = context.get("tenant_id")
             if not query or not tenant_id: