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/wiki/plugin.py

@@ -1,6 +1,8 @@
 """Wiki plugin - knowledge articles, categories, versioning."""
 from __future__ import annotations
+
 import logging
+
 from app.plugins.base import BasePlugin
 from app.plugins.manifest import FrontendMenuItem, FrontendPageRoute, PluginManifest, PluginRouteDef
 
@@ -28,7 +30,9 @@ class WikiPlugin(BasePlugin):
             from app.plugins.builtins.contracts import get_contract
             search_contract = get_contract("unified_search")
             if search_contract and hasattr(search_contract, "get_search_registry"):
-                from app.plugins.builtins.unified_search.providers.wiki_provider import WikiSearchProvider
+                from app.plugins.builtins.unified_search.providers.wiki_provider import (
+                    WikiSearchProvider,
+                )
                 search_contract.get_search_registry().register(WikiSearchProvider())
                 logger.info("Registered WikiSearchProvider via contract")
             else:

app/plugins/builtins/wiki/routes.py

@@ -1,13 +1,20 @@
 """Wiki plugin routes — articles CRUD, categories, versioning."""
 from __future__ import annotations
+
 import uuid
+
 from fastapi import APIRouter, Depends, HTTPException, Query, status
 from sqlalchemy.ext.asyncio import AsyncSession
-from app.core.db import get_db
-from app.deps import get_current_user, require_permission
-from app.plugins.builtins.wiki import services
-from app.plugins.builtins.wiki.schemas import ArticleCreate, ArticleUpdate, CategoryCreate, CategoryUpdate
+
 from app.core.audit import log_audit
+from app.core.db import get_db
+from app.deps import require_permission
+from app.plugins.builtins.wiki import services
+from app.plugins.builtins.wiki.schemas import (
+    ArticleCreate,
+    ArticleUpdate,
+    CategoryCreate,
+)
 
 router = APIRouter(prefix="/api/v1/wiki", tags=["wiki"])
 

app/plugins/builtins/wiki/schemas.py

@@ -1,8 +1,9 @@
 """Pydantic schemas for the Wiki plugin."""
 from __future__ import annotations
-from datetime import datetime
+
 from pydantic import BaseModel, Field
 
+
 class CategoryCreate(BaseModel):
     name: str = Field(..., min_length=1, max_length=200)
     slug: str = Field(..., min_length=1, max_length=200)

app/plugins/builtins/wiki/services.py

@@ -1,11 +1,13 @@
 """Wiki plugin services — CRUD for articles, categories, versioning."""
 from __future__ import annotations
+
 import uuid
 from datetime import UTC, datetime
 from typing import Any
-from sqlalchemy import select, func
+
+from sqlalchemy import func, select
 from sqlalchemy.ext.asyncio import AsyncSession
-from app.core.visibility import apply_visibility_filter
+
 from app.plugins.builtins.wiki.models import WikiArticle, WikiArticleVersion, WikiCategory