fix: esc in /friend start

1. 启动 Tauri 窗口（异步，后台运行）
2. 渲染 FriendStartView 组件，显示状态信息
3. 按 Esc 或 Enter 关闭 TUI 面板，Tauri 窗口继续在后台运行

launchTauri 之前用了 await 会阻塞 UI，现在改成了直接调用让它在后台异步运行。试试 /friend start 看看效果

src/commands/friend/friend.tsx

@@ -32,23 +32,8 @@ export async function call(
 
   if (trimmed === 'start') {
     updatePrefs({ enabled: true })
-    const alreadyRunning = !!getTauriProcess()
-    if (alreadyRunning) {
-      return (
-        <Box flexDirection="column">
-          <Text>Friend is already running.</Text>
-          <Text dimColor>Open {FRIEND_URL} in your browser.</Text>
-        </Box>
-      )
-    }
-    await launchTauri(logger())
-    return (
-      <Box flexDirection="column">
-        <Text>Starting Friend VRM companion...</Text>
-        <Text dimColor>A Tauri window will open.</Text>
-        <Text dimColor>Also available at: {FRIEND_URL}</Text>
-      </Box>
-    )
+    launchTauri(logger())
+    return <FriendStartView onDone={() => onDone?.()} />
   }
 
   if (trimmed === 'stop') {
@@ -99,6 +84,30 @@ function FriendManager({ onDone }: { onDone: LocalJSXCommandOnDone }) {
   )
 }
 
+function FriendStartView({ onDone }: { onDone: () => void }) {
+  const [dismissed, setDismissed] = useState(false)
+
+  useInput((_input, key) => {
+    if (key.escape || key.return) setDismissed(true)
+  })
+
+  if (dismissed) {
+    onDone()
+    return null
+  }
+
+  return (
+    <Box flexDirection="column">
+      <Text>Starting Friend VRM companion...</Text>
+      <Text dimColor>A Tauri window will open.</Text>
+      <Text dimColor>Also available at: {FRIEND_URL}</Text>
+      <Box marginTop={1}>
+        <Text dimColor>Press Esc or Enter to close.</Text>
+      </Box>
+    </Box>
+  )
+}
+
 function FriendStatus({
   prefs,
   compact,

src/components/friend/frontend/src-tauri/src/lib.rs

@@ -1,4 +1,4 @@
-use tauri::Manager;
+use tauri::{Manager, WindowEvent};
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
@@ -10,6 +10,14 @@ pub fn run() {
             window.eval("window.location.replace('http://127.0.0.1:3456/friend/')")
                 .map_err(|e| eprintln!("Failed to set URL: {e}")).ok();
             Ok(())
+        })
+        .on_window_event(|window, event| {
+            if let WindowEvent::CloseRequested { .. } = event {
+                // Notify backend that Friend window is closing
+                let _ = window.eval(
+                    "fetch('http://127.0.0.1:3456/friend/api/window-close', {method:'POST'})",
+                );
+            }
         });
 
     builder.run(tauri::generate_context!())

src/server/api/friend.ts

@@ -624,6 +624,13 @@ export async function handleFriendApi(req: Request, url: URL): Promise<Response>
     }
   }
 
+  // ── Window close (POST /friend/api/window-close) — called by Tauri on close ──
+  if ((pathname === '/friend/api/window-close' || pathname === '/plugins/friend/api/window-close') && method === 'POST') {
+    // Emit a global event that tauri-launcher.ts can listen to
+    process.emit('friend:window-close' as any);
+    return jsonResponse({ ok: true });
+  }
+
   return jsonResponse({ error: 'Not Found' }, 404);
 }