feat(admin,api,player): 返水流程优化、账单详情与数据库重置

优化返水预览/确认/作废，新增玩家账变详情与后台一键重置为 seed 数据，并修复 dev 启动时 3000 端口占用。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "scripts": {
     "build": "nest build",
-    "dev": "nest start --watch",
+    "dev": "node ../../scripts/ensure-port-free.mjs 3000 && nest start --watch",
     "start": "node dist/main",
     "test": "jest",
     "test:watch": "jest --watch",