feat: add standalone dashboard for bot monitoring and control

- Introduced a new dashboard feature with endpoints for bot status, account management, logs, and configuration.
- Added support for starting the dashboard server via command line and configuration options.
- Implemented WebSocket support for real-time log streaming to the dashboard.
- Enhanced configuration management to include dashboard settings.
- Updated package.json to include new dependencies and scripts for dashboard functionality.
- Added tests for dashboard state management and functionality.

src/config.jsonc

@@ -135,6 +135,13 @@
         "redactEmails": true
     },
 
+    // Dashboard (NEW)
+    "dashboard": {
+        "enabled": false, // Auto-start dashboard with bot (default: false)
+        "port": 3000, // Dashboard port (default: 3000)
+        "host": "127.0.0.1" // Bind address (default: 127.0.0.1, localhost only for security)
+    },
+
     // Buy mode
     "buyMode": {
         "maxMinutes": 45
@@ -150,3 +157,4 @@
     }
 }
 
+