feat: 实现平台抽成、提现审批、异步任务集成及安全审计功能

TODO.md

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+# Unfinished Tasks (Phase 4)
+
+## 1. Automation & Engineering (Postgres Queue)
+- [x] **Async Jobs (River)**: Integrated `river` for job queue system.
+    - [x] Refactored Job Args and Workers to match River interface.
+    - [x] Configured service injection for River Client.
+    - [x] Migrated notification dispatch to use River.
+
+## 2. Media & Infra
+- [ ] **Real Storage**: Implement S3/MinIO provider for presigned URLs.
+- [ ] **Media Pipeline**: Implement FFmpeg integration (mock call in job).
+
+## 3. Growth
+- [ ] **Coupons**: Implement coupon logic.