fix(api): 修復時區 import 排序與未使用變數 lint 錯誤

- 修正 import 順序 (standard → third-party → local)
- 修復 datetime/timedelta 未定義錯誤
- 移除未使用的 imports

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

apps/api/src/api/v1/audit_logs.py

@@ -14,8 +14,6 @@ Endpoints:
 from datetime import timedelta
 from typing import Any
 
-from src.utils.timezone import now_taipei
-
 from fastapi import APIRouter, HTTPException, Query, status
 from pydantic import BaseModel
 from sqlalchemy import func, select
@@ -23,6 +21,7 @@ from sqlalchemy import func, select
 from src.core.logging import get_logger
 from src.db.base import get_db_context
 from src.db.models import AuditLog
+from src.utils.timezone import now_taipei
 
 router = APIRouter(prefix="/audit-logs", tags=["Audit Logs"])
 logger = get_logger("awoooi.audit")
@@ -191,7 +190,6 @@ async def get_audit_stats() -> AuditStatsResponse:
     Returns:
         AuditStatsResponse: 統計資訊
     """
-    from datetime import timedelta
 
     async with get_db_context() as db:
         # Total count

apps/api/src/api/v1/incidents.py

@@ -19,8 +19,6 @@ Phase 6.4 核心功能:
 
 from typing import Any
 
-from src.utils.timezone import now_taipei
-
 from fastapi import APIRouter, HTTPException, status
 from pydantic import BaseModel, Field
 
@@ -30,6 +28,7 @@ from src.models.approval import ApprovalRequestResponse
 from src.models.incident import Incident, IncidentStatus, Severity
 from src.services.decision_manager import get_decision_manager
 from src.services.proposal_service import get_proposal_service
+from src.utils.timezone import now_taipei
 
 router = APIRouter(prefix="/incidents", tags=["Incidents"])
 logger = get_logger("awoooi.incidents")
@@ -417,7 +416,6 @@ async def submit_feedback(
     Raises:
         HTTPException: 404 事件不存在
     """
-    from datetime import datetime
 
     from sqlalchemy import select
 
@@ -531,7 +529,6 @@ async def debug_resolve_incident(incident_id: str) -> dict[str, Any]:
     DEBUG: 直接更新 Incident 狀態為 RESOLVED
     用於測試 resolve_incident_after_approval 邏輯
     """
-    from datetime import datetime
 
     from sqlalchemy import select
 
@@ -653,7 +650,6 @@ async def sync_incidents_from_approvals() -> SyncResult:
     """
     掃描所有 pending Approvals，為缺少 Incident 的補建
     """
-    from datetime import datetime
     from uuid import UUID
 
     from src.models.incident import Signal

apps/api/src/api/v1/sentry_webhook.py

@@ -18,20 +18,19 @@ import uuid
 
 import httpx
 import structlog
-
 from fastapi import APIRouter, BackgroundTasks, HTTPException, Request
 from pydantic import BaseModel
 
-from src.utils.timezone import now_taipei_iso
-from src.services.telegram_gateway import get_telegram_gateway
-from src.services.approval_db import get_approval_service
 from src.models.approval import (
     ApprovalRequestCreate,
-    RiskLevel,
     BlastRadius,
     DataImpact,
     DryRunCheck,
+    RiskLevel,
 )
+from src.services.approval_db import get_approval_service
+from src.services.telegram_gateway import get_telegram_gateway
+from src.utils.timezone import now_taipei_iso
 
 logger = structlog.get_logger(__name__)
 

apps/api/src/api/v1/webhooks.py

@@ -26,8 +26,6 @@ import hashlib
 import hmac
 from typing import Literal
 
-from src.utils.timezone import now_taipei
-
 from fastapi import APIRouter, BackgroundTasks, Header, HTTPException, Request, status
 from pydantic import BaseModel, Field
 
@@ -51,6 +49,7 @@ from src.services.openclaw import get_openclaw
 
 # Phase 5: Telegram Gateway (行動戰情室)
 from src.services.telegram_gateway import TelegramGatewayError, get_telegram_gateway
+from src.utils.timezone import now_taipei
 
 router = APIRouter(prefix="/webhooks", tags=["Webhooks"])
 logger = get_logger("awoooi.webhooks")

apps/api/src/plugins/finops/cost_analyzer.py

@@ -14,12 +14,12 @@ Phase 3.3: 商業變現能力 - Day-1 ROI
 
 import logging
 from dataclasses import dataclass, field
-from datetime import timedelta
-
-from src.utils.timezone import now_taipei
+from datetime import datetime, timedelta
 from enum import Enum
 from typing import Literal
 
+from src.utils.timezone import now_taipei
+
 logger = logging.getLogger(__name__)
 
 

apps/api/src/plugins/mcp/mcp_bridge.py

@@ -18,13 +18,13 @@ import re
 import uuid
 from dataclasses import dataclass, field
 from datetime import datetime
-
-from src.utils.timezone import now_taipei
 from enum import Enum
 from typing import Any
 
 import httpx
 
+from src.utils.timezone import now_taipei
+
 logger = logging.getLogger(__name__)
 
 

apps/api/src/services/executor.py

@@ -21,7 +21,6 @@ Supported Operations:
 import asyncio
 import time
 from dataclasses import dataclass
-from src.utils.timezone import now_taipei, now_taipei_iso
 from enum import Enum
 from pathlib import Path
 from typing import Any
@@ -32,6 +31,7 @@ from src.core.config import settings
 from src.db.base import get_db_context
 from src.db.models import AuditLog
 from src.models.approval import ApprovalRequest
+from src.utils.timezone import now_taipei
 
 logger = structlog.get_logger(__name__)
 

apps/api/src/services/notifications/base.py

@@ -12,11 +12,11 @@ Phase 6: leWOOOgo Output Plugins
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from datetime import datetime
-
-from src.utils.timezone import now_taipei
 from enum import Enum
 from typing import Any
 
+from src.utils.timezone import now_taipei
+
 
 class NotificationStatus(str, Enum):
     """通知狀態"""

apps/api/src/services/openclaw.py

@@ -23,9 +23,9 @@ import json
 import random
 import re
 import time
-import httpx
+from datetime import datetime
 
-from src.utils.timezone import now_taipei_iso
+import httpx
 import structlog
 
 from src.core.config import settings
@@ -34,6 +34,7 @@ from src.models.ai import (
     OpenClawDecision,
 )
 from src.services.signoz_client import GoldMetrics, get_signoz_client
+from src.utils.timezone import now_taipei_iso
 
 logger = structlog.get_logger(__name__)
 

apps/api/src/utils/timezone.py

@@ -6,7 +6,7 @@ AWOOOI - 時區工具
 🔴 HARD RULE: 全系統使用台北時區，禁止 UTC
 """
 
-from datetime import datetime, timezone, timedelta
+from datetime import UTC, datetime, timedelta, timezone
 
 # 台北時區 (UTC+8)
 TAIPEI_TZ = timezone(timedelta(hours=8))
@@ -38,7 +38,7 @@ def to_taipei(dt: datetime) -> datetime:
     """
     if dt.tzinfo is None:
         # naive datetime，假設是 UTC
-        dt = dt.replace(tzinfo=timezone.utc)
+        dt = dt.replace(tzinfo=UTC)
     return dt.astimezone(TAIPEI_TZ)