feat: add wordcount helpers, waline lightbox, and extensive bug fixes

- wordcount/min2read/totalcount built-in helpers (replaces hexo-wordcount)
- cloudTags random sort support
- waline lightbox via MutationObserver
- subtitle: seq guard prevents stale API response race
- newest-comments: escapeHtml XSS fix, unified fetchAndRender with cache fallback
- katex: try/catch asset load, encrypt re-render
- chartjs: destroy charts on pjax, fix theme property check
- mathjax: DOMContentLoaded instead of load
- mermaid: clean stale error elements
- medium-zoom: single instance, detach on pjax
- getScrollPercent: WeakMap cache with resize invalidation
- overflowPaddingR: avoid stale DOM refs
- readmode: dedupe button, pjax cleanup
- hexo-blog-decrypt: null-guard translateFn and encryptFn
- tw_cn: expand skipped translate tags
- localStorage: try/catch setItem
- cdn.js: fix [lib|dist]* character class regex bug
- findArchivesTitle: support custom archive_dir
- shuoshuoFN: guard moment.tz when timezone empty
- umami: no-store cache, error handling, path param
- artalk: vote config option
- bump version 5.7.1.260810

layout/includes/third-party/comments/waline.pug

@@ -20,8 +20,29 @@ script.
         path: isShuoshuo ? path : (option && option.path) || path
       })
 
+      let lightboxObserver = null
+      if (GLOBAL_CONFIG.lightbox !== 'null') {
+        const wrap = el.querySelector('#waline-wrap')
+        if (wrap) {
+          lightboxObserver = new MutationObserver(mutations => {
+            const imgs = []
+            mutations.forEach(mutation => {
+              mutation.addedNodes.forEach(node => {
+                if (node.nodeType !== 1) return
+                const nodeImgs = node.matches && node.matches('img') ? [node] : node.querySelectorAll('img')
+                nodeImgs.forEach(img => imgs.push(img))
+              })
+            })
+            const lightboxImgs = imgs.filter(img => img.closest('.wl-content') && !img.classList.contains('wl-emoji'))
+            if (lightboxImgs.length) btf.loadLightbox(lightboxImgs)
+          })
+          lightboxObserver.observe(wrap, { childList: true, subtree: true })
+        }
+      }
+
       if (isShuoshuo) {
         window.shuoshuoComment.destroyWaline = () => {
+          lightboxObserver && lightboxObserver.disconnect()
           destroyWaline(waline)
           if (el.children.length) {
             el.innerHTML = ''
@@ -46,7 +67,7 @@ script.
 
     if (isShuoshuo) {
       '!{use[0]}' === 'Waline'
-        ? window.shuoshuoComment = { loadComment: loadWaline } 
+        ? window.shuoshuoComment = { loadComment: loadWaline }
         : window.loadOtherComment = loadWaline
       return
     }