feat(desktop): add keep-awake setting

packages/ui/src/lib/desktop.ts

@@ -51,6 +51,7 @@ export type DesktopSettings = {
   // Optional absolute path to `opencode` binary.
   opencodeBinary?: string;
   desktopLanAccessEnabled?: boolean;
+  desktopKeepAwakeEnabled?: boolean;
   desktopUiPassword?: string;
   projects?: ProjectEntry[];
   activeProjectId?: string;
@@ -235,6 +236,12 @@ type LaunchAtLoginStatus = {
   enabled: boolean;
 };
 
+type KeepAwakeStatus = {
+  supported: boolean;
+  enabled: boolean;
+  active: boolean;
+};
+
 export const getDesktopLaunchAtLogin = async (): Promise<LaunchAtLoginStatus | null> => {
   if (!canUseElectronDesktopIPC() || !isDesktopLocalOriginActive()) {
     return null;
@@ -269,6 +276,40 @@ export const setDesktopLaunchAtLogin = async (enabled: boolean): Promise<LaunchA
   }
 };
 
+export const getDesktopKeepAwake = async (): Promise<KeepAwakeStatus | null> => {
+  if (!canUseElectronDesktopIPC() || !isDesktopLocalOriginActive()) {
+    return null;
+  }
+
+  try {
+    const result = await invokeDesktop<KeepAwakeStatus>('desktop_get_keep_awake');
+    if (!result || typeof result.supported !== 'boolean' || typeof result.enabled !== 'boolean' || typeof result.active !== 'boolean') {
+      return null;
+    }
+    return result;
+  } catch (error) {
+    console.warn('Failed to get keep awake status', error);
+    return null;
+  }
+};
+
+export const setDesktopKeepAwake = async (enabled: boolean): Promise<KeepAwakeStatus | null> => {
+  if (!canUseElectronDesktopIPC() || !isDesktopLocalOriginActive()) {
+    return null;
+  }
+
+  try {
+    const result = await invokeDesktop<KeepAwakeStatus>('desktop_set_keep_awake', { enabled });
+    if (!result || typeof result.supported !== 'boolean' || typeof result.enabled !== 'boolean' || typeof result.active !== 'boolean') {
+      return null;
+    }
+    return result;
+  } catch (error) {
+    console.warn('Failed to set keep awake status', error);
+    return null;
+  }
+};
+
 const normalizeOrigin = (raw: string): string | null => {
   const trimmed = raw.trim();
   if (!trimmed) return null;
@@ -819,4 +860,3 @@ export const fetchDesktopInstalledApps = async (
     return { apps: [], success: false, hasCache: false, isCacheStale: false };
   }
 };
-