gateway: add local backend update action

src/gateway/ui/pages/dashboard.js

@@ -37,6 +37,7 @@ const LOCAL_BACKEND_ACTION_LABELS = {
   start: 'Start',
   restart: 'Restart',
   stop: 'Stop',
+  update: 'Update',
 };
 const SERVICE_TOGGLE_PATCH_PATHS = {
   heartbeat: 'automation.heartbeat.enabled',
@@ -1569,7 +1570,7 @@ function updateLocalBackends(localBackendsData) {
     const loadText = backend.loadState || 'unknown';
     const resultText = backend.result || 'unknown';
     const availableActions = Array.isArray(backend.availableActions)
-      ? backend.availableActions.filter((value) => ['start', 'restart', 'stop'].includes(String(value)))
+      ? backend.availableActions.filter((value) => ['start', 'restart', 'stop', 'update'].includes(String(value)))
       : [];
     const actionMessage = actionState?.message
       ? `<div class="text-xs ${actionState.tone === 'error' ? 'text-red-400' : actionState.tone === 'success' ? 'text-green-400' : 'text-zinc-400'}">${escapeHtml(String(actionState.message))}</div>`
@@ -1623,6 +1624,7 @@ async function handleLocalBackendAction(backendId, action) {
       action,
     });
     const status = result?.status;
+    const resultMessage = typeof result?.message === 'string' ? result.message : null;
     if (status && typeof status === 'object') {
       _lastLocalBackends = _lastLocalBackends.map((backend) =>
         backend.id === backendId ? status : backend);
@@ -1630,7 +1632,7 @@ async function handleLocalBackendAction(backendId, action) {
     _localBackendActionState.set(backendId, {
       pending: false,
       tone: 'success',
-      message: `${actionLabel} completed`,
+      message: resultMessage ? `${actionLabel} completed: ${resultMessage}` : `${actionLabel} completed`,
     });
     updateLocalBackends({ backends: _lastLocalBackends });