feat: 添加调整终端字体大小设置

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

@@ -16,6 +16,7 @@ const createTableIfNotExists = () => {
       custom_ui_theme TEXT,
       active_terminal_theme_id TEXT,
       terminal_font_family TEXT,
+      terminal_font_size INTEGER, -- 添加字体大小列
       terminal_background_image TEXT,
       page_background_image TEXT,
       updated_at INTEGER NOT NULL
@@ -39,6 +40,7 @@ const mapRowToAppearanceSettings = (row: any): AppearanceSettings => {
         customUiTheme: row.custom_ui_theme,
         activeTerminalThemeId: row.active_terminal_theme_id,
         terminalFontFamily: row.terminal_font_family,
+        terminalFontSize: row.terminal_font_size, // 添加字体大小映射
         terminalBackgroundImage: row.terminal_background_image,
         // terminalBackgroundOpacity: row.terminal_background_opacity, // Removed
         pageBackgroundImage: row.page_background_image,
@@ -56,6 +58,7 @@ const getDefaultAppearanceSettings = (): AppearanceSettings => {
         customUiTheme: JSON.stringify(defaultUiTheme), // Use default UI theme
         activeTerminalThemeId: undefined, // Needs to be set after querying default theme ID
         terminalFontFamily: 'Consolas, "Courier New", monospace, "Microsoft YaHei", "微软雅黑"', // Default font
+        terminalFontSize: 14, // 添加默认字体大小
         terminalBackgroundImage: undefined,
         // terminalBackgroundOpacity: 1.0, // Removed
         pageBackgroundImage: undefined,
@@ -79,17 +82,18 @@ const ensureDefaultSettingsExist = () => {
         if (!row) {
             const sqlInsert = `
                 INSERT INTO ${TABLE_NAME} (
-                    id, custom_ui_theme, active_terminal_theme_id, terminal_font_family,
+                    id, custom_ui_theme, active_terminal_theme_id, terminal_font_family, terminal_font_size, -- 添加列
                     terminal_background_image, -- terminal_background_opacity, -- Removed
                     page_background_image, -- page_background_opacity, -- Removed
                     updated_at
-                ) VALUES (?, ?, ?, ?, ?, ?, ?) -- Adjusted placeholder count
+                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?) -- 调整占位符数量
             `;
             db.run(sqlInsert, [
                 SETTINGS_ID,
                 defaults.customUiTheme,
                 defaults.activeTerminalThemeId, // Initially undefined
                 defaults.terminalFontFamily,
+                defaults.terminalFontSize, // 添加默认值参数
                 defaults.terminalBackgroundImage,
                 // defaults.terminalBackgroundOpacity, // Removed
                 defaults.pageBackgroundImage,
@@ -175,8 +179,8 @@ export const updateAppearanceSettings = async (settingsDto: UpdateAppearanceDto)
   for (const key in settingsDto) {
       if (Object.prototype.hasOwnProperty.call(settingsDto, key)) {
           const dbKey = key.replace(/[A-Z]/g, letter => `_${letter.toLowerCase()}`); // Convert camelCase to snake_case
-          // Ensure only valid keys are updated (Removed opacity keys)
-          if (['custom_ui_theme', 'active_terminal_theme_id', 'terminal_font_family', 'terminal_background_image', 'page_background_image'].includes(dbKey)) {
+          // Ensure only valid keys are updated (Added terminal_font_size)
+          if (['custom_ui_theme', 'active_terminal_theme_id', 'terminal_font_family', 'terminal_font_size', 'terminal_background_image', 'page_background_image'].includes(dbKey)) {
               updates.push(`${dbKey} = ?`);
               params.push((settingsDto as any)[key]);
           }

packages/backend/src/services/appearance.service.ts

@@ -38,6 +38,16 @@ export const updateSettings = async (settingsDto: UpdateAppearanceDto): Promise<
       // We just need to ensure the key exists in the DTO if it's meant to be cleared.
   }
 
+  // 验证 terminalFontSize (如果提供了)
+  if (settingsDto.terminalFontSize !== undefined && settingsDto.terminalFontSize !== null) {
+      const size = Number(settingsDto.terminalFontSize);
+      if (isNaN(size) || size <= 0) {
+          throw new Error(`无效的终端字体大小: ${settingsDto.terminalFontSize}。必须是一个正数。`);
+      }
+      // 可以选择将验证后的数字类型赋值回 DTO，以确保类型正确传递给仓库层
+      settingsDto.terminalFontSize = size;
+  }
+
   // TODO: 如果实现了背景图片上传，这里需要处理文件路径或 URL 的验证/保存逻辑
 
   return appearanceRepository.updateAppearanceSettings(settingsDto);

packages/backend/src/types/appearance.types.ts

@@ -9,6 +9,7 @@ export interface AppearanceSettings {
   customUiTheme?: string; // UI 主题 (CSS 变量 JSON 字符串)
   activeTerminalThemeId?: string; // 当前激活的终端主题 ID (对应 terminal_themes 表的 _id)
   terminalFontFamily?: string; // 终端字体列表字符串
+  terminalFontSize?: number; // 终端字体大小 (px)
   terminalBackgroundImage?: string; // 终端背景图片 URL 或路径
   pageBackgroundImage?: string; // 页面背景图片 URL 或路径
   updatedAt?: number;