chore: v5.7.0

- Remove APlayer/Meting music player support
- Upgrade Artalk to 2.10.0 and add vote feature
- Cache plugins.yml to avoid re-rendering on every generate
- Add null safety for error_404 and highlight config
- Fix series date timestamp format
- Enhance shuoshuo mockPost compatibility and error handling
- Prevent scrollbar flicker when fancybox is open
- Update plugin versions (docsearch, katex, twikoo)
- Bump version to 5.7.0

scripts/tag/series.js

@@ -23,7 +23,7 @@ function buildSeriesGroups () {
       groups[p.series].push({
         title: p.title,
         path: p.path,
-        date: p.date.unix()
+        date: p.date.valueOf()
       })
     }
   }