feat(widget): 添加页面访问量显示功能

- 新增公开 API GET /api/analytics/pv 获取页面访问量
- 前端组件初始化时自动填充 #cwd-page-pv 容器
- 支持数字格式化（如 1.2k、1.5M）
- 将版本号更新至 0.1.8

cwd-api/src/api/public/getPagePv.ts

@@ -0,0 +1,27 @@
+import type { Context } from 'hono';
+import type { Bindings } from '../../bindings';
+
+export const getPagePv = async (c: Context<{ Bindings: Bindings }>) => {
+	try {
+		const rawPostSlug = c.req.query('post_slug') || '';
+		const postSlug = rawPostSlug.trim();
+		const rawSiteId = c.req.query('siteId') || '';
+		const siteId = rawSiteId && rawSiteId !== 'default' ? rawSiteId : '';
+
+		if (!postSlug) {
+			return c.json({ message: 'post_slug is required' }, 400);
+		}
+
+		const row = await c.env.CWD_DB.prepare(
+			'SELECT pv FROM page_stats WHERE post_slug = ? AND site_id = ?'
+		)
+			.bind(postSlug, siteId)
+			.first<{ pv: number }>();
+
+		const pv = row?.pv || 0;
+
+		return c.json({ pv, postSlug });
+	} catch (e: any) {
+		return c.json({ message: e.message || '获取访问量失败' }, 500);
+	}
+};