Add ping health check and extended command palette (> mode)

Author: AnasProgrammer2

src/main/store.ts

@@ -1,4 +1,5 @@
 import { IpcMain } from 'electron'
+import * as net from 'net'
 import { Connection, ConnectionGroup, SSHKey } from '../types/shared'
 import { getDb, rowToConnection, connToRow, rowToGroup, rowToSshKey } from './db'
 
@@ -174,4 +175,19 @@ export function setupStoreHandlers(ipcMain: IpcMain): void {
     }
     return true
   })
+
+  // ── TCP Ping ─────────────────────────────────────────────────────────────────
+  ipcMain.handle('connection:ping', (_event, host: string, port: number) => {
+    return new Promise<{ alive: boolean; latency?: number }>((resolve) => {
+      const start  = Date.now()
+      const socket = new net.Socket()
+      socket.setTimeout(3000)
+      socket.connect(port, host, () => {
+        socket.destroy()
+        resolve({ alive: true, latency: Date.now() - start })
+      })
+      socket.on('error',   () => { socket.destroy(); resolve({ alive: false }) })
+      socket.on('timeout', () => { socket.destroy(); resolve({ alive: false }) })
+    })
+  })
 }

src/preload/index.ts

@@ -231,7 +231,12 @@ const api = {
       ipcRenderer.on('ai:plan', handler)
       return () => ipcRenderer.removeListener('ai:plan', handler)
     },
-  }
+  },
+
+  connection: {
+    ping: (host: string, port: number): Promise<{ alive: boolean; latency?: number }> =>
+      ipcRenderer.invoke('connection:ping', host, port),
+  },
 }
 
 if (process.contextIsolated) {