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/routes/workflows.py

@@ -173,7 +173,6 @@ async def create_instance(
     """Create a new workflow instance."""
     tenant_id = uuid.UUID(current_user["tenant_id"])
     user_id = uuid.UUID(current_user["user_id"])
-    is_admin = current_user.get("is_system_admin", False)
 
     try:
         result = await workflow_service.create_instance(
@@ -304,10 +303,11 @@ async def resume_instance(
     """Resume a waiting workflow instance (e.g. after wait timer expired)."""
     tenant_id = uuid.UUID(current_user["tenant_id"])
 
-    from app.workflows.engine import WorkflowEngine
-    from app.models.workflow import WorkflowInstance
     from sqlalchemy import select
 
+    from app.models.workflow import WorkflowInstance
+    from app.workflows.engine import WorkflowEngine
+
     result = await db.execute(
         select(WorkflowInstance).where(
             WorkflowInstance.id == uuid.UUID(instance_id),
@@ -375,9 +375,10 @@ async def webhook_trigger(
     db: AsyncSession = Depends(get_db),
 ):
     """Incoming webhook trigger — starts a workflow via secure token."""
-    from app.models.webhook import Webhook
     from sqlalchemy import select
 
+    from app.models.webhook import Webhook
+
     result = await db.execute(
         select(Webhook).where(
             Webhook.token == token,
@@ -423,9 +424,10 @@ async def get_instance_history(
     """Get step history for a workflow instance (execution log)."""
     tenant_id = uuid.UUID(current_user["tenant_id"])
 
-    from app.models.workflow import WorkflowStepHistory
     from sqlalchemy import select
 
+    from app.models.workflow import WorkflowStepHistory
+
     result = await db.execute(
         select(WorkflowStepHistory)
         .where(
@@ -472,9 +474,10 @@ async def approve_workflow_step(
         body = {}
     comment = body.get("comment", "")
 
+    from sqlalchemy import select
+
     from app.core.approval import create_approval_request, resolve_approval_request
     from app.models.workflow import WorkflowInstance
-    from sqlalchemy import select
 
     result = await db.execute(
         select(WorkflowInstance).where(
@@ -535,9 +538,10 @@ async def reject_workflow_step(
         body = {}
     comment = body.get("comment", "")
 
+    from sqlalchemy import select
+
     from app.core.approval import create_approval_request, resolve_approval_request
     from app.models.workflow import WorkflowInstance
-    from sqlalchemy import select
 
     result = await db.execute(
         select(WorkflowInstance).where(