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/self_improvement/models.py

@@ -18,7 +18,8 @@ from sqlalchemy import (
     Text,
     func,
 )
-from sqlalchemy.dialects.postgresql import JSONB, UUID as PGUUID
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.dialects.postgresql import UUID as PGUUID
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.core.db import Base, TenantMixin

app/plugins/builtins/self_improvement/services.py

@@ -21,11 +21,10 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.ai.llm_client import llm_complete
 from app.plugins.builtins.self_improvement.models import (
+    ImpactMeasurement,
     ImprovementPattern,
     ImprovementProposal,
     ImprovementSignal,
-    ImpactMeasurement,
-    PROPOSAL_STATUSES,
 )
 
 logger = logging.getLogger(__name__)