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/dashboard.json

@@ -156,9 +156,35 @@
     "riskMonitor": "风控监控",
     "systemSettings": "系统设置"
   },
+  "site": {
+    "title": "站点概览",
+    "subtitle": "{{name}} · 本站点",
+    "todayBet": "今日下注",
+    "todayProfit": "今日盈亏",
+    "sevenDayTitle": "近 7 天走势",
+    "sevenDayProfit": "近 7 天盈亏",
+    "profitScopeHint": "站点口径：投注减派彩（不含占成拆分）",
+    "activePlayersToday": "今日活跃玩家",
+    "betOrdersTodayHint": "今日 {{count}} 单",
+    "pendingBills": "待结账单",
+    "pendingUnpaid": "未结合计 {{amount}}",
+    "latestBetAt": "最近下注 {{time}}",
+    "noBetToday": "今日暂时没有下注",
+    "scaleTitle": "站点规模",
+    "agentCount": "代理节点",
+    "playerCount": "玩家总数",
+    "topAgentToday": "今日投注最高代理：{{name}}（{{amount}}）",
+    "quickLinks": {
+      "tickets": "注单查询",
+      "players": "玩家管理",
+      "reports": "报表统计",
+      "agents": "代理组织",
+      "bills": "结算中心"
+    }
+  },
   "agent": {
     "title": "经营概览",
-    "subtitle": "本线路数据范围 · {{name}}",
+    "subtitle": "{{name}} · 本线路",
     "heroEyebrow": "今日经营驾驶舱",
     "heroTitle": "{{name}} 的线路动态",
     "creditTitle": "授信额度",
@@ -176,6 +202,7 @@
     "teamPlayers": "线路玩家数",
     "activePlayersToday": "今日活跃玩家",
     "betOrdersToday": "今日下注单数",
+    "betOrdersTodayHint": "今日 {{count}} 单",
     "todayBet": "今日下注",
     "todayPayout": "今日派彩",
     "todayProfit": "今日盈亏",
@@ -202,6 +229,7 @@
     "yes": "是",
     "no": "否",
     "viewBills": "查看账单",
+    "lineMeta": "层级 {{depth}} · 可开下级 {{childAgent}} · 可开玩家 {{player}}",
     "viewLine": "代理线路",
     "quickLinks": {
       "tickets": "注单查询",