feat(评论): 新增功能开关管理及评论点赞功能优化

- 在管理后台添加功能开关页面，支持控制评论点赞和文章点赞功能的开启/关闭
- 优化评论点赞功能，支持取消点赞和本地存储点赞状态
- 更新点赞UI样式，提升用户体验
- 添加相关API接口和文档说明

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

@@ -0,0 +1,38 @@
+import { Context } from 'hono';
+import { Bindings } from '../../bindings';
+import {
+	loadFeatureSettings,
+	saveFeatureSettings
+} from '../../utils/featureSettings';
+
+export const getFeatureSettings = async (c: Context<{ Bindings: Bindings }>) => {
+	try {
+		const settings = await loadFeatureSettings(c.env);
+		return c.json(settings);
+	} catch (e: any) {
+		return c.json({ message: e.message || 'Failed to load feature settings' }, 500);
+	}
+};
+
+export const updateFeatureSettings = async (c: Context<{ Bindings: Bindings }>) => {
+	try {
+		const body = await c.req.json();
+		const enableCommentLike =
+			typeof body.enableCommentLike === 'boolean'
+				? body.enableCommentLike
+				: undefined;
+		const enableArticleLike =
+			typeof body.enableArticleLike === 'boolean'
+				? body.enableArticleLike
+				: undefined;
+
+		await saveFeatureSettings(c.env, {
+			enableCommentLike,
+			enableArticleLike
+		});
+
+		return c.json({ message: 'Saved successfully' });
+	} catch (e: any) {
+		return c.json({ message: e.message || 'Failed to save feature settings' }, 500);
+	}
+};