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/tasks/routes.py

@@ -7,6 +7,7 @@ import uuid
 from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response, status
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.core.audit import log_audit
 from app.core.db import get_db
 from app.deps import get_current_user, require_permission
 from app.plugins.builtins.tasks import services
@@ -126,6 +127,7 @@ async def delete_task(
 ):
     """Delete a task (soft-delete)."""
     tenant_id = uuid.UUID(current_user["tenant_id"])
+    user_id = uuid.UUID(current_user["user_id"])
     tid = _parse_uuid(task_id, "task_id")
     deleted = await services.delete_task(db, tenant_id, tid)
     if not deleted:
@@ -261,5 +263,3 @@ async def decompose_goal(
     if result is None:
         raise HTTPException(404, detail={"detail": "Goal not found", "code": "not_found"})
     return result
-
-from app.core.audit import log_audit

app/plugins/builtins/tasks/schemas.py

@@ -7,7 +7,6 @@ from typing import Any
 
 from pydantic import BaseModel, Field
 
-
 TASK_STATUSES = "^(open|in_progress|review|blocked|done|cancelled)$"
 TASK_TYPES = "^(todo|approval|follow_up|review|goal|milestone|agent_subtask)$"
 ASSIGNEE_TYPES = "^(user|agent|group)$"

app/plugins/builtins/tasks/services.py

@@ -16,12 +16,11 @@ def _to_uuid(val: str | UUID | None) -> UUID | None:
         return val
     return uuid.UUID(str(val))
 
-from sqlalchemy import func, select
-from sqlalchemy.ext.asyncio import AsyncSession
-
-from app.core.visibility import apply_visibility_filter
-from app.plugins.builtins.tasks.models import Task
+from sqlalchemy import func, select  # noqa: E402 — after helper defs by design
+from sqlalchemy.ext.asyncio import AsyncSession  # noqa: E402
 
+from app.core.visibility import apply_visibility_filter  # noqa: E402
+from app.plugins.builtins.tasks.models import Task  # noqa: E402
 
 # Lifecycle statuses in display order (Kanban columns)
 STATUS_ORDER = ["open", "in_progress", "review", "blocked", "done", "cancelled"]
@@ -307,7 +306,6 @@ async def create_task(
         entity_id = contact_id
     # Don't store contact_id in FK column if it's just a polymorphic entity link
     # — contact_id FK requires a real Contact row. Use entity_id instead.
-    contact_id_for_fk = _to_uuid(contact_id) if contact_id else None
 
     # Resolve polymorphic creator.
     creator_type = data.get("creator_type", "user")