更新压缩机制，提高前缀缓存命中率，优化UI渲染机制，提高帧数

electron/main.js

@@ -60,6 +60,25 @@ let mainWindow = null;
 let pythonProcess = null;
 let isQuitting = false;
 let isLaunching = false;  // 防止 setup 窗口关闭时触发 app.quit
+let _closeConfirmed = false; // 后台任务确认后放行关闭
+
+/** 查询后端运行中的后台终端任务数（退出确认用；后端不可用时视为 0） */
+function checkRunningTasks() {
+  return new Promise((resolve) => {
+    const req = http.get(`${BASE_URL}/api/terminal/running-count`, { timeout: 2000 }, (res) => {
+      let body = '';
+      res.on('data', (d) => (body += d));
+      res.on('end', () => {
+        try {
+          const n = Number(JSON.parse(body).running) || 0;
+          resolve(n);
+        } catch { resolve(0); }
+      });
+    });
+    req.on('error', () => resolve(0));
+    req.on('timeout', () => { req.destroy(); resolve(0); });
+  });
+}
 
 // ==================== 端口清理 ====================
 function killPortProcess(port) {
@@ -343,6 +362,28 @@ async function createMainWindow(themeMode) {
 
   mainWindow.on('closed', () => { mainWindow = null; });
 
+  // 关闭拦截：若仍有后台终端任务在运行，先弹确认（"终止并关闭 / 取消"）
+  mainWindow.on('close', (e) => {
+    if (isQuitting || _closeConfirmed) return;
+    e.preventDefault();
+    checkRunningTasks().then(async (n) => {
+      if (n > 0) {
+        const { response } = await dialog.showMessageBox(mainWindow, {
+          type: 'warning',
+          buttons: ['终止并关闭', '取消'],
+          defaultId: 1,
+          cancelId: 1,
+          title: '后台终端仍在运行',
+          message: `仍有 ${n} 个后台终端任务在运行`,
+          detail: '终止这些任务并关闭应用？（若不终止，进程将与应用一并被清理）',
+        });
+        if (response !== 0) return;
+      }
+      _closeConfirmed = true;
+      mainWindow.close();
+    });
+  });
+
   mainWindow.webContents.setWindowOpenHandler(({ url }) => {
     require('electron').shell.openExternal(url).catch(() => {});
     return { action: 'deny' };
@@ -971,11 +1012,29 @@ app.on('before-quit', () => {
   stopFastAPI();
 });
 
-// ==================== 内置 PowerShell 终端 ====================
-// 每个标签对应一个 powershell 子进程；面板折叠不 kill，仅标签 x / 右上角 x / 退出时清理。
+// ==================== 内置 PowerShell 终端（ConPTY 真终端） ====================
+// 每个标签对应一个经 node-pty (Windows ConPTY) 启动的真实 PowerShell 会话，
+// PSReadLine / Tab 补全 / 历史 / 全屏应用由真实控制台提供，前端 xterm.js 渲染。
+// 面板折叠不 kill（仅隐藏）；标签 x 单个 kill；右上角 x 确认后 kill 全部。
 const _terminals = new Map();  // id -> { proc, sender }
 let _terminalSeq = 0;
 
+// 优先 PowerShell 7（truecolor / PSReadLine 更强），回退 Windows PowerShell 5.1
+let _shellPathCache = '';
+function resolveShellPath() {
+  if (_shellPathCache) return _shellPathCache;
+  try {
+    execSync('where pwsh.exe', { stdio: 'ignore', shell: true });
+    _shellPathCache = 'pwsh.exe';
+  } catch (e) {
+    _shellPathCache = path.join(
+      process.env.SystemRoot || 'C:\\Windows',
+      'System32', 'WindowsPowerShell', 'v1.0', 'powershell.exe'
+    );
+  }
+  return _shellPathCache;
+}
+
 function forceKill(proc) {
   try { proc.kill(); } catch (e) { /* ignore */ }
   // Windows 兜底：taskkill 结束整个进程树（处理 Ctrl 信号不响应/子进程残留）
@@ -991,30 +1050,28 @@ function killAllTerminals() {
   _terminals.clear();
 }
 
-ipcMain.handle('terminal:spawn', (event, { cwd } = {}) => {
+ipcMain.handle('terminal:spawn', (event, { cwd, cols, rows } = {}) => {
   const id = ++_terminalSeq;
   let proc;
   try {
-    proc = spawn('powershell.exe', ['-NoLogo'], {
+    // ConPTY 需真实控制台；懒加载，模块缺失时不影响应用其余功能
+    const pty = require('@homebridge/node-pty-prebuilt-multiarch');
+    proc = pty.spawn(resolveShellPath(), ['-NoLogo'], {
       cwd: (cwd && fs.existsSync(cwd)) ? cwd : undefined,
-      windowsHide: true,
+      cols: (cols | 0) || 80,
+      rows: (rows | 0) || 24,
+      env: { ...process.env, TERM: 'xterm-256color' },
     });
   } catch (e) {
-    return { id, ok: false, error: String(e && e.message || e) };
+    return { id, ok: false, error: String((e && e.message) || e) };
   }
   _terminals.set(id, { proc, sender: event.sender });
-  proc.stdout.on('data', (chunk) => {
-    if (!event.sender.isDestroyed()) event.sender.send('terminal:data', { id, chunk: chunk.toString('utf8') });
+  proc.onData((chunk) => {
+    if (!event.sender.isDestroyed()) event.sender.send('terminal:data', { id, chunk });
   });
-  proc.stderr.on('data', (chunk) => {
-    if (!event.sender.isDestroyed()) event.sender.send('terminal:data', { id, chunk: chunk.toString('utf8') });
-  });
-  proc.on('exit', (code) => {
+  proc.onExit(({ exitCode }) => {
     _terminals.delete(id);
-    if (!event.sender.isDestroyed()) event.sender.send('terminal:exit', { id, code });
-  });
-  proc.on('error', (err) => {
-    if (!event.sender.isDestroyed()) event.sender.send('terminal:exit', { id, code: -1, error: String(err.message || err) });
+    if (!event.sender.isDestroyed()) event.sender.send('terminal:exit', { id, code: exitCode });
   });
   return { id, ok: true };
 });
@@ -1022,7 +1079,13 @@ ipcMain.handle('terminal:spawn', (event, { cwd } = {}) => {
 ipcMain.on('terminal:input', (_event, { id, data } = {}) => {
   const t = _terminals.get(id);
   if (!t || !data) return;
-  try { t.proc.stdin.write(data); } catch (e) { /* ignore */ }
+  try { t.proc.write(data); } catch (e) { /* ignore */ }
+});
+
+ipcMain.on('terminal:resize', (_event, { id, cols, rows } = {}) => {
+  const t = _terminals.get(id);
+  if (!t) return;
+  try { t.proc.resize((cols | 0) || 80, (rows | 0) || 24); } catch (e) { /* ignore */ }
 });
 
 ipcMain.on('terminal:kill', (_event, { id } = {}) => {

electron/preload.js

@@ -29,8 +29,9 @@ contextBridge.exposeInMainWorld('electronAPI', {
   openInExplorer: (filePath) => ipcRenderer.invoke('shell:openInExplorer', filePath),
 
   // ===== 内置 PowerShell 终端 =====
-  spawnTerminal: (cwd) => ipcRenderer.invoke('terminal:spawn', { cwd }),
+  spawnTerminal: (cwd, cols, rows) => ipcRenderer.invoke('terminal:spawn', { cwd, cols, rows }),
   sendTerminalInput: (id, data) => ipcRenderer.send('terminal:input', { id, data }),
+  resizeTerminal: (id, cols, rows) => ipcRenderer.send('terminal:resize', { id, cols, rows }),
   killTerminal: (id) => ipcRenderer.send('terminal:kill', { id }),
   killAllTerminals: () => ipcRenderer.send('terminal:killAll'),
   onTerminalData: (cb) => {