feat(analytics): 埋点事件接收接口 + admin 查询接口 + 埋点表 (#81)

新手引导埋点的服务端:
- 表 analytics_event(五维硬性列 + props JSON 扩展字段;event/device_id/user_id/session_id/created_at 带索引)
- POST /api/v1/analytics/events:客户端批量上报(不鉴权、body 读可选 user_id、补 client_ip + server_at)
- admin GET /admin/api/event-logs:列表 + 按 事件/设备/用户/会话/时间 筛选(offset 分页,照 list_feedbacks)
- alembic migration 建表(autogenerate 顺带检出的 ad/cps 历史索引漂移已手动剔除)

app 主后端 :8770 与 admin :8771 共用同一 SQLite,admin 同库直接查、无需跨库。
配套客户端五维上报 + admin 日志页(另两仓库 PR)。

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

---------

Co-authored-by: zzhyyyyy <2685922758@qq.com>
Reviewed-on: #81
Co-authored-by: zhuzihao <zhuzihao@wonderable.ai>
Co-committed-by: zhuzihao <zhuzihao@wonderable.ai>

app/admin/main.py

@@ -25,6 +25,7 @@ from app.admin.routers.cps import router as cps_router
 from app.admin.routers.dashboard import router as dashboard_router
 from app.admin.routers.device_liveness import router as device_liveness_router
 from app.admin.routers.ops_stat_config import router as ops_stat_config_router
+from app.admin.routers.event_logs import router as event_logs_router
 from app.admin.routers.feedback import router as feedback_router
 from app.admin.routers.feedback_qr import router as feedback_qr_router
 from app.admin.routers.onboarding import router as onboarding_router
@@ -93,6 +94,7 @@ admin_app.include_router(wallet_router)
 admin_app.include_router(withdraw_router)
 admin_app.include_router(price_report_router)
 admin_app.include_router(feedback_router)
+admin_app.include_router(event_logs_router)
 admin_app.include_router(feedback_qr_router)
 admin_app.include_router(admins_router)
 admin_app.include_router(audit_router)