fix(sync-ui): exit CLI cleanly when sync window closes

- Use runAppCommandInteractive so sync-window inherits the terminal directly
- Quit app on window-all-closed when launched with --sync-window on macOS
- Catch synchronous onWillQuitCleanup errors to prevent quit getting stuck

launcher/commands/app-command.ts

@@ -1,12 +1,14 @@
 import {
   launchAppBackgroundDetached,
   launchTexthookerOnly,
+  runAppCommandInteractive,
   runAppCommandWithInherit,
 } from '../mpv.js';
 import type { LauncherCommandContext } from './context.js';
 
 type AppCommandDeps = {
   runAppCommandWithInherit: (appPath: string, appArgs: string[]) => void;
+  runAppCommandInteractive: (appPath: string, appArgs: string[]) => void;
   launchAppBackgroundDetached: (
     appPath: string,
     logLevel: LauncherCommandContext['args']['logLevel'],
@@ -15,6 +17,7 @@ type AppCommandDeps = {
 
 const defaultAppCommandDeps: AppCommandDeps = {
   runAppCommandWithInherit,
+  runAppCommandInteractive,
   launchAppBackgroundDetached,
 };
 
@@ -31,7 +34,7 @@ export function runAppPassthroughCommand(
     return true;
   }
   if (args.syncUi) {
-    deps.runAppCommandWithInherit(appPath, ['--sync-window']);
+    deps.runAppCommandInteractive(appPath, ['--sync-window']);
     return true;
   }
   if (!args.appPassthrough) {

launcher/commands/command-modules.test.ts

@@ -206,6 +206,7 @@ test('app command starts default macOS background app detached from launcher', (
     runAppCommandWithInherit: () => {
       calls.push('attached');
     },
+    runAppCommandInteractive: () => calls.push('interactive'),
     launchAppBackgroundDetached: (appPath, logLevel) => {
       calls.push(`detached:${appPath}:${logLevel}`);
     },
@@ -225,6 +226,7 @@ test('app command starts default Linux background app detached from launcher', (
     runAppCommandWithInherit: () => {
       calls.push('attached');
     },
+    runAppCommandInteractive: () => calls.push('interactive'),
     launchAppBackgroundDetached: (appPath, logLevel) => {
       calls.push(`detached:${appPath}:${logLevel}`);
     },
@@ -245,6 +247,7 @@ test('app command keeps explicit passthrough args attached', () => {
     runAppCommandWithInherit: (_appPath, appArgs) => {
       forwarded.push(appArgs);
     },
+    runAppCommandInteractive: () => detached.push('interactive'),
     launchAppBackgroundDetached: () => {
       detached.push('detached');
     },
@@ -255,6 +258,21 @@ test('app command keeps explicit passthrough args attached', () => {
   assert.deepEqual(detached, []);
 });
 
+test('sync UI command attaches the app directly to the terminal', () => {
+  const context = createContext();
+  context.args.syncUi = true;
+  const calls: string[] = [];
+
+  const handled = runAppPassthroughCommand(context, {
+    runAppCommandWithInherit: () => calls.push('piped'),
+    runAppCommandInteractive: (_appPath, appArgs) => calls.push(`direct:${appArgs.join(' ')}`),
+    launchAppBackgroundDetached: () => calls.push('detached'),
+  });
+
+  assert.equal(handled, true);
+  assert.deepEqual(calls, ['direct:--sync-window']);
+});
+
 test('mpv pre-app command exits non-zero when socket is not ready', async () => {
   const context = createContext();
   context.args.mpvStatus = true;