fix(config): 统一 APP_TIMEZONE 至 Config 类，修复 wallet 循环导入

将散落在 scheduler / stats_aggregator / daily_usage_ledger / routes
中的 os.getenv("APP_TIMEZONE") 收归 Config.app_timezone，消除
wallet → system → maintenance_scheduler → user.preference → wallet
的循环导入链。

src/api/admin/api_keys/routes.py

@@ -5,7 +5,6 @@
 
 from __future__ import annotations
 
-import os
 from datetime import datetime, timedelta, timezone
 from typing import Any, Literal
 from zoneinfo import ZoneInfo
@@ -18,6 +17,7 @@ from sqlalchemy.orm import Session
 from src.api.base.admin_adapter import AdminApiAdapter
 from src.api.base.context import ApiRequestContext
 from src.api.base.pipeline import ApiRequestPipeline
+from src.config import config
 from src.core.exceptions import InvalidRequestException, NotFoundException
 from src.core.logger import logger
 from src.database import get_db, get_db_context
@@ -27,8 +27,7 @@ from src.services.user.apikey import ApiKeyService
 from src.services.user.bulk_cleanup import pre_clean_api_key
 from src.services.wallet import WalletService
 
-# 应用时区配置，默认为 Asia/Shanghai
-APP_TIMEZONE = ZoneInfo(os.getenv("APP_TIMEZONE", "Asia/Shanghai"))
+APP_TIMEZONE = ZoneInfo(config.app_timezone)
 
 
 def parse_expiry_date(date_str: str | None) -> datetime | None:

src/api/dashboard/routes.py

@@ -647,12 +647,12 @@ class UserDashboardStatsAdapter(DashboardAdapter):
     async def handle(self, context: ApiRequestContext) -> Any:  # type: ignore[override]
         from zoneinfo import ZoneInfo
 
-        from src.services.system.stats_aggregator import APP_TIMEZONE
+        from src.config import config
 
         db = context.db
         user = context.user
         # 使用业务时区计算日期，确保与用户感知的"今天"一致
-        app_tz = ZoneInfo(APP_TIMEZONE)
+        app_tz = ZoneInfo(config.app_timezone)
         now_local = datetime.now(app_tz)
         today_local = now_local.replace(hour=0, minute=0, second=0, microsecond=0)
         # 转换为 UTC 用于数据库查询
@@ -1159,9 +1159,9 @@ class DashboardDailyStatsAdapter(DashboardAdapter):
         # 使用业务时区计算日期，确保每日统计与业务日期一致
         from zoneinfo import ZoneInfo
 
-        from src.services.system.stats_aggregator import APP_TIMEZONE
+        from src.config import config
 
-        app_tz = ZoneInfo(APP_TIMEZONE)
+        app_tz = ZoneInfo(config.app_timezone)
         now_local = datetime.now(app_tz)
         today_local = now_local.replace(hour=0, minute=0, second=0, microsecond=0)
         # 转换为 UTC 用于数据库查询

src/config/settings.py

@@ -87,6 +87,9 @@ class Config:
         # 注意: allow_credentials=True 时不能使用 allow_origins=["*"]
         self.cors_allow_credentials = os.getenv("CORS_ALLOW_CREDENTIALS", "true").lower() == "true"
 
+        # 应用时区配置（用于定时任务、账单日期等业务逻辑）
+        self.app_timezone = os.getenv("APP_TIMEZONE", "Asia/Shanghai")
+
         # 管理员账户配置（用于初始化）
         self.admin_email = os.getenv("ADMIN_EMAIL", "admin@localhost")
         self.admin_username = os.getenv("ADMIN_USERNAME", "admin")

src/services/system/__init__.py

@@ -11,7 +11,7 @@ from src.services.system.maintenance_scheduler import (
     MaintenanceScheduler,
     get_maintenance_scheduler,
 )
-from src.services.system.scheduler import APP_TIMEZONE, TaskScheduler, get_scheduler
+from src.services.system.scheduler import TaskScheduler, get_scheduler
 from src.services.system.sync_stats import SyncStatsService
 
 __all__ = [
@@ -23,5 +23,4 @@ __all__ = [
     "SyncStatsService",
     "TaskScheduler",
     "get_scheduler",
-    "APP_TIMEZONE",
 ]

src/services/system/scheduler.py

@@ -8,7 +8,6 @@
 
 from __future__ import annotations
 
-import os
 from datetime import datetime
 from typing import Any, Callable
 
@@ -17,10 +16,11 @@ from apscheduler.triggers.cron import CronTrigger
 from apscheduler.triggers.date import DateTrigger
 from apscheduler.triggers.interval import IntervalTrigger
 
+from src.config import config
 from src.core.logger import logger
 
-# 应用时区配置，默认为 Asia/Shanghai
-APP_TIMEZONE = os.getenv("APP_TIMEZONE", "Asia/Shanghai")
+# 统一从 config 读取，不再重复 os.getenv
+APP_TIMEZONE = config.app_timezone
 
 
 class TaskScheduler:

src/services/system/stats_aggregator.py

@@ -5,7 +5,6 @@
 
 from __future__ import annotations
 
-import os
 import uuid
 from dataclasses import dataclass
 from datetime import date, datetime, time, timedelta, timezone
@@ -16,6 +15,7 @@ from sqlalchemy import Date, Float, and_, case, cast, func, text
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.orm import Session
 
+from src.config import config
 from src.core.logger import logger
 from src.models.database import (
     ApiKey,
@@ -36,8 +36,7 @@ from src.models.database import (
 from src.models.database import User as DBUser
 from src.services.system.time_range import TimeRangeParams, split_time_range_for_hourly
 
-# App timezone (legacy defaults for dashboard)
-APP_TIMEZONE = os.getenv("APP_TIMEZONE", "Asia/Shanghai")
+APP_TIMEZONE = config.app_timezone
 MIN_PERCENTILE_SAMPLES = 10
 
 

src/services/wallet/daily_usage_ledger.py

@@ -8,10 +8,12 @@ from zoneinfo import ZoneInfo
 from sqlalchemy import func
 from sqlalchemy.orm import Session
 
+from src.config import config
 from src.core.logger import logger
 from src.models.database import Usage, WalletDailyUsageLedger
 from src.services.billing.precision import to_money_decimal
-from src.services.system.scheduler import APP_TIMEZONE
+
+APP_TIMEZONE = config.app_timezone
 
 
 @dataclass(slots=True)