Move process wiring, technical adapters, and cross-cutting contracts out of flat internal/ packages so new code has a clear home without changing business layout.
- 新增 cache-framework skill,规范 RAM→Redis→DB 读路径、失效与 pub/sub - 上传元数据 Otter+Redis 缓存与多节点失效;Auth Source 缓存与 pub/sub - ListSystemConfigsByKeys 补 Redis 层;上传统计单事务;登录/Token 缓存预热 - cleanup 任务补 upload meta 失效钩子