feat(agents, config, dashboard, i18n): add agent line provision wizard, site deletion, and site dashboard with multi-language support

Added agent line provision wizard page with permission gating, replacing redirect placeholder. Introduced site deletion API and UI with confirmation dialog in integration sites management. Added new site-scoped dashboard panel showing bet metrics, P/L trends, active players, and quick links. Enhanced chart tooltip to support custom formatters and fix indicator color

src/i18n/locales/zh/common.json

@@ -111,6 +111,10 @@
     "loading": "加载中…",
     "comingSoon": "功能开发中"
   },
+  "integrationSites": {
+    "emptyPlatformHint": "暂无接入站点。请先创建站点，再进行代理、玩家、结算等业务操作。",
+    "createSite": "去创建接入站点"
+  },
   "errors": {
     "loadFailed": "加载失败"
   },