feat: transfer tab state to popout window and close tab in main window

- Restore transfer-tab-data IPC for transferring tab state
- Create usePopOutTab hook to receive tab data in new window
- Update handlePopOut to transfer data and close tab in main window
- Add PopOutTabData interface for type safety

electron/main.ts

@@ -491,6 +491,20 @@ ipcMain.handle('create-window', async (_event, tabData: { route: string; title:
   }
 });
 
+ipcMain.handle('transfer-tab-data', async (_event, windowId: number, tabData: any) => {
+  try {
+    const win = electronState.getWindow(windowId);
+    if (!win) {
+      return { success: false, error: 'Window not found' };
+    }
+    win.webContents.send('tab-data-received', tabData);
+    return { success: true };
+  } catch (error: any) {
+    log.error('[PopOut] Failed to transfer tab data:', error);
+    return { success: false, error: error.message };
+  }
+});
+
 ipcMain.handle('window-minimize', async (event) => {
   const win = BrowserWindow.fromWebContents(event.sender);
   if (win) {

electron/preload.ts

@@ -54,6 +54,12 @@ contextBridge.exposeInMainWorld('electronAPI', {
   terminalGetStatus: () => ipcRenderer.invoke('terminal-get-status'),
   terminalGetPort: () => ipcRenderer.invoke('terminal-get-port'),
   createWindow: (tabData: { route: string; title: string }) => ipcRenderer.invoke('create-window', tabData),
+  transferTabData: (windowId: number, tabData: any) => ipcRenderer.invoke('transfer-tab-data', windowId, tabData),
+  onTabDataReceived: (callback: (tabData: any) => void) => {
+    const handler = (_event: Electron.IpcRendererEvent, tabData: any) => callback(tabData);
+    ipcRenderer.on('tab-data-received', handler);
+    return () => ipcRenderer.removeListener('tab-data-received', handler);
+  },
   windowMinimize: () => ipcRenderer.invoke('window-minimize'),
   windowMaximize: () => ipcRenderer.invoke('window-maximize'),
   windowClose: () => ipcRenderer.invoke('window-close'),

src/hooks/domain/index.ts

@@ -3,6 +3,7 @@ export { useDialogState, useErrorDialogState } from './useDialogState'
 export { useNoteBrowser, type UseNoteBrowserReturn } from './useNoteBrowser'
 export { useNoteContent } from './useNoteContent'
 export { useAutoLoadTabContent } from './useAutoLoadTabContent'
+export { usePopOutTab } from './usePopOutTab'
 
 export { useFileSystemController } from './useFileSystemController'
 export { useFileTabs } from './useFileTabs'

src/hooks/domain/usePopOutTab.ts

@@ -0,0 +1,58 @@
+import { useEffect } from 'react'
+import { useTabStore, TabState } from '@/stores'
+
+export interface PopOutTabData {
+  file: {
+    name: string
+    path: string
+    type: 'file' | 'dir'
+    size: number
+    modified: string
+  }
+  content: string
+  unsavedContent: string
+  isEditing: boolean
+  loading: boolean
+  loaded: boolean
+}
+
+export function usePopOutTab() {
+  const { selectFile } = useTabStore()
+
+  useEffect(() => {
+    const unsubscribe = window.electronAPI?.onTabDataReceived((tabData: PopOutTabData) => {
+      console.log('[PopOut] Received tab data:', tabData)
+
+      if (!tabData?.file?.path) {
+        console.error('[PopOut] Invalid tab data received')
+        return
+      }
+
+      const { file, content, unsavedContent, isEditing, loading, loaded } = tabData
+
+      const newTab: TabState = {
+        file: file as any,
+        content: content || '',
+        unsavedContent: unsavedContent || content || '',
+        isEditing: isEditing || false,
+        loading: loading || false,
+        loaded: loaded !== undefined ? loaded : true,
+      }
+
+      useTabStore.setState((state) => {
+        const newTabs = new Map(state.tabs)
+        newTabs.set(file.path, newTab)
+        return {
+          tabs: newTabs,
+          activeTabId: file.path,
+        }
+      })
+
+      selectFile(file as any)
+    })
+
+    return () => {
+      unsubscribe?.()
+    }
+  }, [selectFile])
+}

src/pages/NoteBrowser.tsx

@@ -119,9 +119,29 @@ export const NoteBrowser = () => {
   }, [selectFile])
 
   const handlePopOut = useCallback(async (file: FileItem) => {
+    const tabState = tabs.get(file.path)
+    if (!tabState) return
+
+    const tabData = {
+      file: file,
+      content: tabState.content,
+      unsavedContent: tabState.unsavedContent,
+      isEditing: tabState.isEditing,
+      loading: tabState.loading,
+      loaded: tabState.loaded,
+    }
+
     const route = `/popout?path=${encodeURIComponent(file.path)}&name=${encodeURIComponent(file.name)}`
-    await window.electronAPI?.createWindow({ route, title: file.name })
-  }, [])
+    const result = await window.electronAPI?.createWindow({ route, title: file.name })
+
+    if (result?.success && result.windowId) {
+      setTimeout(() => {
+        window.electronAPI?.transferTabData(result.windowId!, tabData)
+      }, 500)
+    }
+
+    closeFile(file)
+  }, [tabs, closeFile])
 
   useEffect(() => {
     if (!isMarkdown && showTOC) {

src/pages/PopoutPage.tsx

@@ -6,6 +6,7 @@ import { MarkdownTabPage } from '@/components/tabs/MarkdownTabPage'
 import { RemoteTabPage } from '@/modules/remote/RemoteTabPage'
 import { FileTransferPage } from '@/modules/remote/components/file-transfer/FileTransferPage'
 import { Minus, Square, X, Maximize2 } from 'lucide-react'
+import { usePopOutTab } from '@/hooks/domain/usePopOutTab'
 
 export const PopoutPage = () => {
   const [searchParams] = useSearchParams()
@@ -13,6 +14,8 @@ export const PopoutPage = () => {
   const [error, setError] = useState<string | null>(null)
   const [isMaximized, setIsMaximized] = useState(false)
 
+  usePopOutTab()
+
   useEffect(() => {
     const path = searchParams.get('path')
     const name = searchParams.get('name')

src/types/electron.d.ts

@@ -54,6 +54,8 @@ export interface ElectronAPI {
   terminalGetStatus: () => Promise<{ running: boolean; port: number }>
   terminalGetPort: () => Promise<{ port: number }>
   createWindow: (tabData: { route: string; title: string }) => Promise<{ success: boolean; windowId?: number; error?: string }>
+  transferTabData: (windowId: number, tabData: any) => Promise<{ success: boolean; error?: string }>
+  onTabDataReceived: (callback: (tabData: any) => void) => () => void
   windowMinimize: () => Promise<{ success: boolean }>
   windowMaximize: () => Promise<{ success: boolean; isMaximized?: boolean }>
   windowClose: () => Promise<{ success: boolean }>