feat(app): add keyboard shortcut to cycle themes

packages/app/src/app/_layout.tsx

@@ -14,7 +14,7 @@ import { BottomSheetModalProvider } from "@gorhom/bottom-sheet";
 import { PortalProvider } from "@gorhom/portal";
 import { VoiceProvider } from "@/contexts/voice-context";
 import { useAppSettings } from "@/hooks/use-settings";
-import { THEME_TO_UNISTYLES } from "@/styles/theme";
+import { THEME_TO_UNISTYLES, type ThemeName } from "@/styles/theme";
 import { useFaviconStatus } from "@/hooks/use-favicon-status";
 import { View, Text } from "react-native";
 import { UnistylesRuntime, useUnistyles } from "react-native-unistyles";
@@ -358,6 +358,8 @@ interface AppContainerProps {
   chromeEnabled?: boolean;
 }
 
+const THEME_CYCLE_ORDER: ThemeName[] = ["dark", "zinc", "midnight", "claude", "ghostty", "light"];
+
 function AppContainer({
   children,
   selectedAgentId,
@@ -365,6 +367,7 @@ function AppContainer({
 }: AppContainerProps) {
   const { theme } = useUnistyles();
   const daemons = useHosts();
+  const { settings, updateSettings } = useAppSettings();
   const toggleAgentList = usePanelStore((state) => state.toggleAgentList);
   const toggleFileExplorer = usePanelStore((state) => state.toggleFileExplorer);
   const toggleBothSidebars = usePanelStore((state) => state.toggleBothSidebars);
@@ -373,6 +376,12 @@ function AppContainer({
   const agentListOpen = usePanelStore((state) => state.desktop.agentListOpen);
   const sidebarWidth = usePanelStore((state) => state.sidebarWidth);
 
+  const cycleTheme = useCallback(() => {
+    const currentIndex = THEME_CYCLE_ORDER.indexOf(settings.theme as ThemeName);
+    const nextIndex = (currentIndex + 1) % THEME_CYCLE_ORDER.length;
+    void updateSettings({ theme: THEME_CYCLE_ORDER[nextIndex]! });
+  }, [settings.theme, updateSettings]);
+
   const isCompactLayout = useIsCompactFormFactor();
   const chromeEnabled = chromeEnabledOverride ?? daemons.length > 0;
 
@@ -413,6 +422,7 @@ function AppContainer({
     toggleFileExplorer,
     toggleBothSidebars,
     toggleFocusMode,
+    cycleTheme,
   });
 
   const containerStyle = useMemo(