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/ne/dashboard.json

@@ -153,6 +153,32 @@
     "riskMonitor": "जोखिम निगरानी",
     "systemSettings": "प्रणाली सेटिङ"
   },
+  "site": {
+    "title": "साइट सारांश",
+    "subtitle": "{{name}} · यो साइट",
+    "todayBet": "आजको बाजी",
+    "todayProfit": "आजको नाफा/नोक्सान",
+    "sevenDayTitle": "पछिल्लो ७ दिन",
+    "sevenDayProfit": "७-दिने नाफा/नोक्सान",
+    "profitScopeHint": "साइट दायरा: बाजी माइनस भुक्तानी",
+    "activePlayersToday": "आज सक्रिय खेलाडी",
+    "betOrdersTodayHint": "आज {{count}} अर्डर",
+    "pendingBills": "बाँकी बिल",
+    "pendingUnpaid": "नतिरेको {{amount}}",
+    "latestBetAt": "पछिल्लो बाजी {{time}}",
+    "noBetToday": "आज अहिलेसम्म बाजी छैन",
+    "scaleTitle": "साइट परिमाण",
+    "agentCount": "एजेन्ट नोड",
+    "playerCount": "खेलाडी संख्या",
+    "topAgentToday": "आजको शीर्ष एजेन्ट: {{name}} ({{amount}})",
+    "quickLinks": {
+      "tickets": "टिकट",
+      "players": "खेलाडी",
+      "reports": "रिपोर्ट",
+      "agents": "एजेन्ट",
+      "bills": "सेटलमेन्ट"
+    }
+  },
   "warnings": {
     "drawPermission": "यो खातासँग ड्रअ/ड्यासबोर्ड हेर्ने अनुमति छैन। वित्तीय र जोखिम डाटा फिर्ता आएन।",
     "walletPermission": "यो खातासँग वालेट मिलान हेर्ने अनुमति छैन। असामान्य ट्रान्सफर संख्या फिर्ता आएन।",