refactor: crud 并入 repositories + alembic 迁移文件去 hex 前缀

- 数据访问层统一: app/crud/{ad_reward,savings,signin,task,wallet}.py 移入
  app/repositories/(与 user.py 同目录),删除 crud/;更新 10 处 import
  (api/v1/* + scripts/* + repositories 内部交叉引用 app.crud→app.repositories)
- alembic/versions 9 个迁移文件去掉 hex 前缀,改成可读文件名(如
  welfare_tables_coin_account_coin_txn.py);**仅重命名文件**,文件内
  revision/down_revision 不动 → 迁移链与已迁移库的 alembic_version 不受影响
  (alembic heads/history 验证链完好,单一 head c8d9e0f1a2b3)
- 测试: 37 passed(1 个 coupon 代理失败为连不到 pricebot 上游的环境问题,与本次无关)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/api/v1/ad.py

@@ -19,7 +19,7 @@ from app.core import rewards
 from app.core.config import settings
 from app.integrations import pangle
 from app.core.ratelimit import rate_limit
-from app.crud import ad_reward as crud_ad
+from app.repositories import ad_reward as crud_ad
 from app.schemas.ad import AdRewardStatusOut, PangleCallbackOut, TestGrantOut
 
 logger = logging.getLogger("shagua.ad")

app/api/v1/savings.py

@@ -12,7 +12,7 @@ import logging
 from fastapi import APIRouter, Query
 
 from app.api.deps import CurrentUser, DbSession
-from app.crud import savings as crud_savings
+from app.repositories import savings as crud_savings
 from app.schemas.welfare import (
     SavingsBattleOut,
     SavingsRecordOut,

app/api/v1/signin.py

@@ -11,7 +11,7 @@ import logging
 from fastapi import APIRouter, HTTPException, status
 
 from app.api.deps import CurrentUser, DbSession
-from app.crud import signin as crud_signin
+from app.repositories import signin as crud_signin
 from app.schemas.welfare import SigninResultOut, SigninStatusOut
 
 logger = logging.getLogger("shagua.signin")

app/api/v1/tasks.py

@@ -11,7 +11,7 @@ import logging
 from fastapi import APIRouter, HTTPException, status
 
 from app.api.deps import CurrentUser, DbSession
-from app.crud import task as crud_task
+from app.repositories import task as crud_task
 from app.schemas.welfare import TaskClaimResultOut, TaskListOut, TaskOut
 
 logger = logging.getLogger("shagua.tasks")

app/api/v1/wallet.py

@@ -20,7 +20,7 @@ from app.core.rewards import (
     WITHDRAW_MAX_CENTS,
     WITHDRAW_MIN_CENTS,
 )
-from app.crud import wallet as crud_wallet
+from app.repositories import wallet as crud_wallet
 from app.models.user import User
 from app.schemas.welfare import (
     BindWechatRequest,

app/repositories/ad_reward.py

@@ -15,7 +15,7 @@ from sqlalchemy.exc import IntegrityError
 from sqlalchemy.orm import Session
 
 from app.core.rewards import AD_REWARD_COIN, DAILY_AD_REWARD_LIMIT, cn_today
-from app.crud import wallet as crud_wallet
+from app.repositories import wallet as crud_wallet
 from app.models.ad_reward import AdRewardRecord
 from app.models.user import User
 

app/repositories/signin.py

@@ -14,7 +14,7 @@ from sqlalchemy import select
 from sqlalchemy.orm import Session
 
 from app.core.rewards import SIGNIN_CYCLE_LEN, SIGNIN_REWARDS, cn_today, signin_reward
-from app.crud import wallet as crud_wallet
+from app.repositories import wallet as crud_wallet
 from app.models.signin import SigninRecord
 
 

app/repositories/task.py

@@ -10,7 +10,7 @@ from sqlalchemy import select
 from sqlalchemy.orm import Session
 
 from app.core.rewards import TASK_REWARDS
-from app.crud import wallet as crud_wallet
+from app.repositories import wallet as crud_wallet
 from app.models.task import UserTask
 
 

scripts/reconcile_withdraws.py

@@ -20,7 +20,7 @@ try:
 except Exception:  # noqa: BLE001
     pass
 
-from app.crud import wallet as crud_wallet
+from app.repositories import wallet as crud_wallet
 from app.db.session import SessionLocal
 
 

scripts/sim_pangle_callback.py

@@ -30,7 +30,7 @@ from sqlalchemy import select  # noqa: E402
 from app.integrations import pangle  # noqa: E402
 from app.core.config import settings  # noqa: E402
 from app.core.rewards import AD_REWARD_COIN  # noqa: E402
-from app.crud import wallet as crud_wallet  # noqa: E402
+from app.repositories import wallet as crud_wallet  # noqa: E402
 from app.db.session import SessionLocal  # noqa: E402
 from app.main import app  # noqa: E402
 from app.models.user import User  # noqa: E402