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

AGENTS.md

@@ -28,3 +28,8 @@ This version has breaking changes — APIs, conventions, and file structure may
 - 玩家详情：按 `funding_mode` 切换 Tab（信用流水 / 钱包流水；信用盘隐藏转账单）
 
 新增涉及玩家资金的页面时，先读 `src/lib/admin-player-display.ts`。
+
+## Learned Workspace Facts
+
+- 无接入站时依赖站点的页面展示 `<AdminNoIntegrationSiteState />`；仅 `profile.is_super_admin` 显示创建入口。
+- 超管判定用登录态 `is_super_admin`，勿用站点角色或 `admin_user_site_roles` 绑定推断。