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) {

packages/frontend/src/components/Terminal.vue

@@ -46,7 +46,10 @@ const {
  
 // --- Settings Store ---
 const settingsStore = useSettingsStore(); // +++ 实例化设置 store +++
-const { autoCopyOnSelectBoolean } = storeToRefs(settingsStore); // +++ 获取选中即复制状态 +++
+const {
+  autoCopyOnSelectBoolean,
+  terminalScrollbackLimitNumber // NEW: Import scrollback limit getter
+} = storeToRefs(settingsStore); // +++ 获取选中即复制状态 +++
 
 // 防抖函数
 const debounce = (func: Function, delay: number) => {
@@ -119,6 +122,14 @@ const debouncedSetTerminalFontSize = debounce(async (size: number) => {
     }
 }, 500); // 500ms 防抖延迟，可以调整
 
+// NEW: Helper function to convert setting value to xterm scrollback value
+const getScrollbackValue = (limit: number): number => {
+  if (limit === 0) {
+    return Infinity; // 0 means unlimited for xterm
+  }
+  return Math.max(0, limit); // Ensure non-negative, return the number otherwise
+};
+
 // 初始化终端
 onMounted(() => {
   if (terminalRef.value) {
@@ -132,7 +143,7 @@ onMounted(() => {
       allowTransparency: true,
       disableStdin: false,
       convertEol: true,
-      scrollback: 1000, // 减少可滚动历史行数
+      scrollback: getScrollbackValue(terminalScrollbackLimitNumber.value), // NEW: Use setting from store
       scrollOnUserInput: true, // 输入时滚动到底部
       ...props.options, // 合并外部传入的选项
     });

packages/frontend/src/locales/en-US.json

@@ -640,6 +640,19 @@
       "showQuickCommandTagsLabel": "Show tags in quick command list",
       "showQuickCommandTagsDescription": "Disable to hide tags in the quick command list and exclude them from search."
     },
+    "terminalScrollback": {
+      "title": "Terminal Scrollback Limit",
+      "limitLabel": "Maximum Lines",
+      "limitHint": "Set the maximum number of output lines the terminal keeps. 0 means unlimited (uses default 5000). This setting takes effect the next time a terminal is opened.",
+      "saveButton": "Save",
+      "success": {
+        "saved": "Terminal scrollback limit setting saved successfully."
+      },
+      "error": {
+        "saveFailed": "Failed to save terminal scrollback limit setting.",
+        "invalidInput": "Please enter a valid non-negative integer."
+      }
+    },
     "ipBlacklist": {
       "title": "IP Blacklist Management",
       "description": "Configure login attempt limits and automatic ban duration. Local addresses (127.0.0.1, ::1) will not be banned.",

packages/frontend/src/locales/ja-JP.json

@@ -874,6 +874,19 @@
             "showQuickCommandTagsLabel": "クイックコマンドリストにタグを表示",
             "showQuickCommandTagsDescription": "無効にすると、クイックコマンドリストのタグが非表示になり、検索から除外されます。"
         },
+        "terminalScrollback": {
+          "title": "ターミナルスクロールバック制限",
+          "limitLabel": "最大行数",
+          "limitHint": "ターミナルが保持する最大出力行数を設定します。0 は無制限を意味します (デフォルト値 5000 を使用)。この設定は、次にターミナルを開いたときに有効になります。",
+          "saveButton": "保存",
+          "success": {
+            "saved": "ターミナルスクロールバック制限の設定が正常に保存されました。"
+          },
+          "error": {
+            "saveFailed": "ターミナルスクロールバック制限の設定の保存に失敗しました。",
+            "invalidInput": "有効な非負整数を入力してください。"
+          }
+        },
         "about": {
             "version": "バージョン",
             "checkingUpdate": "更新を確認中...",

packages/frontend/src/locales/zh-CN.json

@@ -640,6 +640,19 @@
       "showQuickCommandTagsLabel": "在快捷指令列表中显示标签",
       "showQuickCommandTagsDescription": "关闭后将隐藏快捷指令列表中的标签，并从搜索中排除标签。"
     },
+    "terminalScrollback": {
+      "title": "终端回滚行数",
+      "limitLabel": "最大行数",
+      "limitHint": "设置终端保留的最大输出行数。0 表示无限制 (使用默认值 5000)。此设置将在下次打开终端时生效。",
+      "saveButton": "保存",
+      "success": {
+        "saved": "终端回滚行数设置已保存。"
+      },
+      "error": {
+        "saveFailed": "保存终端回滚行数设置失败。",
+        "invalidInput": "请输入一个有效的非负整数。"
+      }
+    },
     "ipBlacklist": {
       "title": "IP 黑名单管理",
       "description": "配置登录失败次数限制和自动封禁时长。本地地址 (127.0.0.1, ::1) 不会被封禁。",

packages/frontend/src/stores/settings.store.ts

@@ -56,6 +56,7 @@ interface SettingsState {
   showConnectionTags?: string; // 'true' or 'false'
   showQuickCommandTags?: string; // 'true' or 'false'
   layoutLocked?: string; // 'true' or 'false' - NEW: 布局锁定状态
+  terminalScrollbackLimit?: string; // NEW: 终端回滚行数上限 (e.g., '5000', '0' for unlimited)
   [key: string]: string | undefined;
 }
 
@@ -270,6 +271,11 @@ export const useSettingsStore = defineStore('settings', () => {
       } else {
           console.log(`[SettingsStore] layoutLocked found in fetched settings: ${settings.value.layoutLocked}`);
       }
+      // NEW: Terminal scrollback limit default
+      if (settings.value.terminalScrollbackLimit === undefined) {
+          settings.value.terminalScrollbackLimit = '5000'; // 默认 5000 行
+          console.log(`[SettingsStore] terminalScrollbackLimit not found, set to default: ${settings.value.terminalScrollbackLimit}`);
+      }
     
     
       // --- 语言设置 ---
@@ -357,7 +363,8 @@ export const useSettingsStore = defineStore('settings', () => {
         'dashboardSortOrder',
         'showConnectionTags', // NEW
         'showQuickCommandTags', // NEW
-        'layoutLocked' // NEW
+        'layoutLocked', // NEW
+        'terminalScrollbackLimit' // NEW
       ];
       if (!allowedKeys.includes(key)) {
           console.error(`[SettingsStore] 尝试更新不允许的设置键: ${key}`);
@@ -442,7 +449,8 @@ export const useSettingsStore = defineStore('settings', () => {
         'dashboardSortOrder',
         'showConnectionTags', // NEW
         'showQuickCommandTags', // NEW
-        'layoutLocked' // NEW
+        'layoutLocked', // NEW
+        'terminalScrollbackLimit' // NEW
       ];
       const filteredUpdates: Partial<SettingsState> = {};
       let languageUpdate: string | undefined = undefined;
@@ -717,6 +725,18 @@ export const useSettingsStore = defineStore('settings', () => {
       return settings.value.layoutLocked === 'true';
   });
 
+  // NEW: Getter for terminal scrollback limit, returning number (0 means Infinity for xterm)
+  const terminalScrollbackLimitNumber = computed(() => {
+      const valStr = settings.value.terminalScrollbackLimit;
+      if (valStr === null || valStr === undefined || valStr.trim() === '') {
+          return 5000; // Default value if not set or empty
+      }
+      const val = parseInt(valStr, 10);
+      if (isNaN(val) || val < 0) {
+          return 5000; // Default value if invalid number or negative
+      }
+      return val; // Return 0 if it's 0, or the positive number
+  });
 
  return {
     settings, // 只包含通用设置
@@ -758,5 +778,6 @@ export const useSettingsStore = defineStore('settings', () => {
     showQuickCommandTagsBoolean,
     // NEW: Expose layout locked getter
     layoutLockedBoolean,
+    terminalScrollbackLimitNumber, // NEW: Expose terminal scrollback limit getter
   };
   });

packages/frontend/src/views/SettingsView.vue

@@ -484,6 +484,26 @@
                      </div>
                  </form>
               </div>
+              <hr class="border-border/50"> <!-- NEW: Separator -->
+              <!-- Terminal Scrollback Limit -->
+              <div class="settings-section-content">
+                 <h3 class="text-base font-semibold text-foreground mb-3">{{ t('settings.terminalScrollback.title', '终端回滚行数') }}</h3>
+                 <form @submit.prevent="handleUpdateTerminalScrollbackLimit" class="space-y-4">
+                   <div>
+                     <label for="terminalScrollbackLimitInput" class="block text-sm font-medium text-text-secondary mb-1">{{ t('settings.terminalScrollback.limitLabel', '最大行数') }}</label>
+                     <input type="number" id="terminalScrollbackLimitInput" v-model.number="terminalScrollbackLimitLocal" min="0" step="1" placeholder="5000"
+                            class="w-full px-3 py-2 border border-border rounded-md shadow-sm bg-background text-foreground focus:outline-none focus:ring-1 focus:ring-primary focus:border-primary">
+                     <small class="block mt-1 text-xs text-text-secondary">{{ t('settings.terminalScrollback.limitHint', '设置终端保留的最大输出行数。0 或留空表示无限制 (使用默认值 5000)。此设置将在下次打开终端时生效。') }}</small>
+                   </div>
+                   <div class="flex items-center justify-between">
+                      <button type="submit" :disabled="terminalScrollbackLimitLoading"
+                              class="px-4 py-2 bg-button text-button-text rounded-md shadow-sm hover:bg-button-hover focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-primary disabled:opacity-50 disabled:cursor-not-allowed transition duration-150 ease-in-out text-sm font-medium">
+                        {{ terminalScrollbackLimitLoading ? t('common.loading') : t('settings.terminalScrollback.saveButton', '保存') }}
+                      </button>
+                      <p v-if="terminalScrollbackLimitMessage" :class="['text-sm', terminalScrollbackLimitSuccess ? 'text-success' : 'text-error']">{{ terminalScrollbackLimitMessage }}</p>
+                   </div>
+                 </form>
+              </div>
             </div>
           </div>
 
@@ -666,6 +686,7 @@ const {
     ipBlacklistEnabledBoolean, // <-- Import IP Blacklist enabled getter
     showConnectionTagsBoolean, // NEW: Import connection tag visibility getter
     showQuickCommandTagsBoolean, // NEW: Import quick command tag visibility getter
+    terminalScrollbackLimitNumber, // NEW: Import terminal scrollback limit getter
 } = storeToRefs(settingsStore);
 
 // Removed Passkey state import from authStore
@@ -692,6 +713,7 @@ const commandInputSyncTargetLocal = ref<'none' | 'quickCommands' | 'commandHisto
 const ipBlacklistEnabled = ref(true); // <-- Local state for IP Blacklist switch
 const showConnectionTagsLocal = ref(true); // NEW: Local state for connection tags switch
 const showQuickCommandTagsLocal = ref(true); // NEW: Local state for quick command tags switch
+const terminalScrollbackLimitLocal = ref<number | null>(null); // NEW: Local state for terminal scrollback limit input (allow null for empty input)
 
 // --- Local UI feedback state ---
 const ipWhitelistLoading = ref(false);
@@ -742,6 +764,9 @@ const showConnectionTagsSuccess = ref(false); // NEW
 const showQuickCommandTagsLoading = ref(false); // NEW
 const showQuickCommandTagsMessage = ref(''); // NEW
 const showQuickCommandTagsSuccess = ref(false); // NEW
+const terminalScrollbackLimitLoading = ref(false); // NEW
+const terminalScrollbackLimitMessage = ref(''); // NEW
+const terminalScrollbackLimitSuccess = ref(false); // NEW
 // CAPTCHA Form State
 const captchaForm = reactive<UpdateCaptchaSettingsDto>({ // Use reactive for the form object
     enabled: false,
@@ -792,6 +817,8 @@ watch(settings, (newSettings, oldSettings) => {
   ipBlacklistEnabled.value = ipBlacklistEnabledBoolean.value; // <-- Sync IP Blacklist enabled state
   showConnectionTagsLocal.value = showConnectionTagsBoolean.value; // NEW: Sync connection tags state
   showQuickCommandTagsLocal.value = showQuickCommandTagsBoolean.value; // NEW: Sync quick command tags state
+  // NEW: Directly sync terminal scrollback limit from store getter to local state
+  terminalScrollbackLimitLocal.value = terminalScrollbackLimitNumber.value;
 
 }, { deep: true, immediate: true }); // immediate: true to run on initial load
 
@@ -816,6 +843,9 @@ watch(captchaSettings, (newCaptchaSettings) => {
 }, { immediate: true }); // immediate: true to run on initial load
 
 
+// Watcher specifically for terminalScrollbackLimitNumber is redundant if the main settings watcher handles it.
+// Let's remove the specific watcher for simplicity, the main one should suffice.
+
 // --- Popup Editor setting method ---
 const handleUpdatePopupEditorSetting = async () => {
     popupEditorLoading.value = true;
@@ -1020,6 +1050,34 @@ const handleUpdateShowQuickCommandTags = async () => {
     }
 };
 
+// --- Terminal Scrollback Limit setting method ---
+const handleUpdateTerminalScrollbackLimit = async () => {
+    terminalScrollbackLimitLoading.value = true;
+    terminalScrollbackLimitMessage.value = '';
+    terminalScrollbackLimitSuccess.value = false;
+    try {
+        const limitValue = terminalScrollbackLimitLocal.value;
+
+        // Validate: must be a non-negative integer or null/undefined (treat null/undefined as default 5000)
+        if (limitValue !== null && limitValue !== undefined && (isNaN(limitValue) || !Number.isInteger(limitValue) || limitValue < 0)) {
+            throw new Error(t('settings.terminalScrollback.error.invalidInput', '请输入一个有效的非负整数。'));
+        }
+
+        // If input is empty (null/undefined), save the default value '5000'. Otherwise, save the entered number as string.
+        const valueToSave = (limitValue === null || limitValue === undefined) ? '5000' : String(limitValue);
+
+        await settingsStore.updateSetting('terminalScrollbackLimit', valueToSave);
+        terminalScrollbackLimitMessage.value = t('settings.terminalScrollback.success.saved', '终端回滚行数设置已保存。');
+        terminalScrollbackLimitSuccess.value = true;
+    } catch (error: any) {
+        console.error('更新终端回滚行数设置失败:', error);
+        terminalScrollbackLimitMessage.value = error.message || t('settings.terminalScrollback.error.saveFailed', '保存终端回滚行数设置失败。');
+        terminalScrollbackLimitSuccess.value = false;
+    } finally {
+        terminalScrollbackLimitLoading.value = false;
+    }
+};
+
 // --- 外观设置 ---
 const openStyleCustomizer = () => {
     appearanceStore.toggleStyleCustomizer(true);