feat: 添加终端回滚行数设置

packages/backend/src/repositories/settings.repository.ts

@@ -268,6 +268,7 @@ export const ensureDefaultSettingsExist = async (db: sqlite3.Database): Promise<
         [SIDEBAR_CONFIG_KEY]: JSON.stringify(defaultSidebarPanesStructure),
         [CAPTCHA_CONFIG_KEY]: JSON.stringify(defaultCaptchaSettings),
         timezone: 'UTC', // NEW: 添加时区默认值
+        terminalScrollbackLimit: '5000', // NEW: 添加终端回滚行数默认值
     };
     const nowSeconds = Math.floor(Date.now() / 1000);
     const sqlInsertOrIgnore = `INSERT OR IGNORE INTO settings (key, value, created_at, updated_at) VALUES (?, ?, ?, ?)`;

packages/backend/src/settings/settings.controller.ts

@@ -48,7 +48,8 @@ export const settingsController = {
           'rdpModalWidth', // NEW: 添加 RDP 模态框宽度键
           'rdpModalHeight', // NEW: 添加 RDP 模态框高度键
           'ipBlacklistEnabled', // <-- 添加 IP 黑名单启用键
-          'layoutLocked' // +++ 添加布局锁定键 +++
+          'layoutLocked', // +++ 添加布局锁定键 +++
+          'terminalScrollbackLimit' // NEW: 添加终端回滚行数键
       ];
       const filteredSettings: Record<string, string> = {};
       for (const key in settingsToUpdate) {