feat(admin): app_config 运营配置后台(rewards 等常量可后台配置) (#14)

- 新增 app_config 表 + model/repository/config_schema + admin config 路由与 schema + 测试
- rewards.py 及 ad_reward/signin/task/wallet/comparison_milestone repositories 接入可配置项;ad.py / admin/main.py 配套
- alembic merge(ebb6af5c0b56)合并本地 app_config(cfg1a2b3c4d5)与 incoming price_report/best_deeplink(b7e2c1a9f4d3)两 head

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Reviewed-on: #14

app/admin/main.py

@@ -16,6 +16,7 @@ from fastapi.middleware.cors import CORSMiddleware
 from app.admin.routers.admins import router as admins_router
 from app.admin.routers.audit import router as audit_router
 from app.admin.routers.auth import router as auth_router
+from app.admin.routers.config import router as config_router
 from app.admin.routers.dashboard import router as dashboard_router
 from app.admin.routers.feedback import router as feedback_router
 from app.admin.routers.users import router as users_router
@@ -78,3 +79,4 @@ admin_app.include_router(withdraw_router)
 admin_app.include_router(feedback_router)
 admin_app.include_router(admins_router)
 admin_app.include_router(audit_router)
+admin_app.include_router(config_router)

app/admin/routers/config.py

@@ -0,0 +1,81 @@
+"""admin 运营配置:列出所有可配项 + 改某项(带审计 + 改值校验)。
+
+配置项定义见 app.core.config_schema.CONFIG_DEFS;业务读配置 fallback 默认(见 app_config repo)。
+权限:operator / finance 都可改(运营调奖励、财务调额度),super 恒可。
+"""
+from __future__ import annotations
+
+from typing import Annotated, Any
+
+from fastapi import APIRouter, Depends, HTTPException, Request
+
+from app.admin.audit import write_audit
+from app.admin.deps import AdminDb, get_client_ip, get_current_admin, require_role
+from app.admin.schemas.config import ConfigItemOut, ConfigUpdateRequest
+from app.core.config_schema import CONFIG_DEFS
+from app.models.admin import AdminUser
+from app.repositories import app_config
+
+router = APIRouter(
+    prefix="/admin/api/config",
+    tags=["admin-config"],
+    dependencies=[Depends(get_current_admin)],
+)
+
+
+def _validate(key: str, value: Any) -> None:
+    """按配置项 type 校验新值,不合法抛 ValueError(router 转 400)。"""
+    t = CONFIG_DEFS[key]["type"]
+    if t == "int":
+        if not isinstance(value, int) or isinstance(value, bool) or value < 0:
+            raise ValueError("需为非负整数")
+    elif t == "int_list":
+        if not isinstance(value, list) or not value:
+            raise ValueError("需为非空整数列表")
+        if not all(isinstance(x, int) and not isinstance(x, bool) and x >= 0 for x in value):
+            raise ValueError("列表元素需为非负整数")
+        if key == "signin_rewards" and len(value) != 7:
+            raise ValueError("签到档位必须正好 7 个(对应 7 天循环)")
+    elif t == "dict_str_int":
+        if not isinstance(value, dict) or not all(
+            isinstance(k, str) and isinstance(v, int) and not isinstance(v, bool)
+            for k, v in value.items()
+        ):
+            raise ValueError("需为 {字符串: 整数} 映射")
+
+
+def _item(db, key: str) -> ConfigItemOut:
+    for item in app_config.list_all(db):
+        if item["key"] == key:
+            return ConfigItemOut(**item)
+    raise HTTPException(status_code=404, detail="未知配置项")
+
+
+@router.get("", response_model=list[ConfigItemOut], summary="所有可配项 + 当前值")
+def list_config(db: AdminDb) -> list[ConfigItemOut]:
+    return [ConfigItemOut(**item) for item in app_config.list_all(db)]
+
+
+@router.patch("/{key}", response_model=ConfigItemOut, summary="改某项配置(带审计)")
+def update_config(
+    key: str,
+    body: ConfigUpdateRequest,
+    request: Request,
+    admin: Annotated[AdminUser, Depends(require_role("operator", "finance"))],
+    db: AdminDb,
+) -> ConfigItemOut:
+    if key not in CONFIG_DEFS:
+        raise HTTPException(status_code=404, detail="未知配置项")
+    try:
+        _validate(key, body.value)
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e)) from e
+
+    before = app_config.get_value(db, key)
+    app_config.set_value(db, key, body.value, admin_id=admin.id, commit=False)
+    write_audit(
+        db, admin, action="config.set", target_type="config", target_id=key,
+        detail={"before": before, "after": body.value}, ip=get_client_ip(request), commit=False,
+    )
+    db.commit()
+    return _item(db, key)

app/admin/schemas/config.py

@@ -0,0 +1,22 @@
+"""admin 运营配置 schemas。"""
+from __future__ import annotations
+
+from typing import Any
+
+from pydantic import BaseModel
+
+
+class ConfigItemOut(BaseModel):
+    key: str
+    label: str
+    group: str
+    type: str  # int / int_list / dict_str_int
+    help: str | None = None
+    default: Any
+    value: Any
+    overridden: bool  # 是否被运营覆盖过(false=用默认)
+    updated_at: str | None = None
+
+
+class ConfigUpdateRequest(BaseModel):
+    value: Any