feat(评论系统): 添加评论配置和头像显示功能

- 新增评论配置管理功能，包括博主邮箱、标签和头像前缀设置
- 在评论列表显示用户头像
- 实现服务端配置存储和获取逻辑
- 优化前端设置页面，拆分不同配置项
- 修改开发预览页面配置保存逻辑

cwd-comments-admin/src/api/admin.ts

@@ -11,6 +11,7 @@ export type CommentItem = {
 	pubDate: string;
 	author: string;
 	email: string;
+	avatar: string;
 	postSlug: string;
 	url: string | null;
 	ipAddress: string | null;
@@ -32,6 +33,12 @@ export type AdminEmailResponse = {
 	email: string | null;
 };
 
+export type CommentSettingsResponse = {
+	adminEmail: string | null;
+	adminBadge: string | null;
+	avatarPrefix: string | null;
+};
+
 export async function loginAdmin(name: string, password: string): Promise<string> {
 	const res = await post<AdminLoginResponse>('/admin/login', { name, password });
 	const key = res.data.key;
@@ -63,3 +70,14 @@ export function saveAdminEmail(email: string): Promise<{ message: string }> {
 	return put<{ message: string }>('/admin/settings/email', { email });
 }
 
+export function fetchCommentSettings(): Promise<CommentSettingsResponse> {
+	return get<CommentSettingsResponse>('/admin/settings/comments');
+}
+
+export function saveCommentSettings(data: {
+	adminEmail?: string;
+	adminBadge?: string;
+	avatarPrefix?: string;
+}): Promise<{ message: string }> {
+	return put<{ message: string }>('/admin/settings/comments', data);
+}