Merge pull request 'Configure Renovate' (#1) from renovate/configure into master

Reviewed-on: #1
··[CST 2026-02-22 Sunday 19:37:28]

js/random.js

@@ -0,0 +1,13 @@
+function randomPost() {
+    fetch('/sitemap.xml').then(res => res.text()).then(str => (new window.DOMParser()).parseFromString(str, "text/xml")).then(data => {
+        let ls = data.querySelectorAll('url loc');
+        let locationHref,locSplit;
+        do {
+            locationHref = ls[Math.floor(Math.random() * ls.length)].innerHTML
+            locSplit = locationHref.split('/')[3] || ''
+        } while (locSplit !== 'posts');
+        //若所有文章都如 https://…….com/posts/2022/07/…… 格式，主域名后字符是 posts，则循环条件改为：
+        //while (locSplit !== 'posts');
+        location.href = locationHref
+    })
+}