feat(ad): 膨胀弹窗改用服务端权威金额 + 本轮累计口径,下线 signin_boost (#154)

Co-authored-by: guke <guke@wonderable.ai>
Co-authored-by: 左辰勇 <exinglang@gmail.com>
Reviewed-on: #154
Co-authored-by: zuochenyong <zuochenyong@wonderable.ai>
Co-committed-by: zuochenyong <zuochenyong@wonderable.ai>

docs/database/README.md

@@ -35,7 +35,6 @@
 | `withdraw_order` | 提现单(现金→微信零钱,含人工审核态;`source` 分账 coin_cash/invite_cash) | `models/wallet.py` | [详情](./withdraw_order.md) |
 | `wechat_transfer_authorization` | 微信免确认转账授权(一用户一行) | `models/wallet.py` | [详情](./wechat_transfer_authorization.md) |
 | `signin_record` | 签到记录(7 天循环) | `models/signin.py` | [详情](./signin_record.md) |
-| `signin_boost_record` | 签到后看广告膨胀记录 | `models/signin.py` | [详情](./signin_boost_record.md) |
 | `user_task` | 一次性任务领取去重 | `models/task.py` | [详情](./user_task.md) |
 | `ad_reward_record` | 看激励视频发奖记录(S2S 回调,trans_id 幂等) | `models/ad_reward.py` | [详情](./ad_reward_record.md) |
 | `ad_watch_log` | 看广告观看时长(旧版兼容字段) | `models/ad_watch_log.py` | [详情](./ad_watch_log.md) |