fix(lint): ruff auto-fix + lewooogo-core src 加入 git

- Python: ruff --fix 修復 280 個 lint 錯誤
- lewooogo-core: src/ 目錄未追蹤，導致 CI eslint 失敗

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/models/__init__.py

@@ -20,10 +20,10 @@ from src.models.approval import (
     PendingApprovalsResponse,
     RejectRequest,
     RiskLevel,
-    SignRequest,
-    SignResponse,
     Signature,
     SignatureSource,
+    SignRequest,
+    SignResponse,
 )
 
 # Incident Models (Phase 6 - 認知覺醒)