fix(api): 修復 mypy 類型錯誤 - Incident 欄位補齊

apps/api/src/services/proposal_service.py

@@ -344,6 +344,8 @@ class ProposalService:
             signals=signals,
             affected_services=record.affected_services or [],
             proposal_ids=[UUID(pid) for pid in (record.proposal_ids or [])],
+            decision_chain=None,  # DB 不存完整決策鏈
+            outcome=None,  # DB 存結果狀態而非完整 outcome
             created_at=record.created_at,
             updated_at=record.updated_at,
             resolved_at=record.resolved_at,
@@ -555,8 +557,8 @@ class ProposalService:
                 incident.status = IncidentStatus.RESOLVED
                 incident.resolved_at = datetime.now(UTC)
                 incident.updated_at = datetime.now(UTC)
-                if incident.decision:
-                    incident.decision.state = "completed"
+                # 注意: decision_chain 是完整 AI 推論過程，不需要在此修改
+                # 狀態由 incident.status = RESOLVED 表達
                 await redis_client.set(key, incident.model_dump_json(), ex=604800)
                 redis_ok = True
                 logger.info(