feat: add terminal broadcast, context menu, and shell close

Complete multi-pane broadcast, standard terminal right-click actions, batch host selection with progress, and native ssh_close_shell so closing a pane tears down the remote shell.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/layout/StatusBar.tsx

@@ -5,6 +5,7 @@ import { usePoolStore } from '../../stores/connection/poolStore'
 import type { ConnectionState } from '../../stores/connection'
 import { useConnectionPanelStore } from '../../stores/connectionPanelStore'
 import { useSessionStore } from '../../stores'
+import packageJson from '../../../package.json'
 
 // ============== Status Display Config ==============
 
@@ -84,7 +85,7 @@ function mapTabStatusToConnectionState(status?: ConnectionStatus): ConnectionSta
 
 export default function StatusBar() {
   const togglePanel = useConnectionPanelStore((s) => s.toggle)
-  const [version, setVersion] = useState('1.0.0')
+  const [version, setVersion] = useState(packageJson.version)
   const [currentTime, setCurrentTime] = useState(new Date())
 
   // Tab store