chore: release v5.5.3

- Bump version from 5.5.3-b2 to 5.5.3 in package.json
- Update third-party dependencies:
  * algolia_search: 5.43.0 -> 5.46.0
  * docsearch: 4.3.1 -> 4.3.2
  * fancybox: 6.1.4 -> 6.1.7
  * katex: 0.16.25 -> 0.16.27
  * mermaid: 11.12.1 -> 11.12.2
  * waline: 3.7.1 -> 3.8.0

perf: optimize JavaScript performance
- Add defer attribute to script tags in pjax and prismjs
- Improve DOM content loading timing in pjax
- Optimize utilities with better throttle implementation
- Cache header positions for TOC performance
- Optimize related posts generation with Maps
- Improve archive helpers performance

fix: improve error handling and UI fixes
- Replace process.exit with proper error throwing
- Fix tooltip positioning with boundary checks
- Add btn-effects to readmode exit button
- Fix element height calculation for hidden elements
- Improve image filters in dark mode (brightness .88, contrast .95)

style: code improvements and consistency
- Refactor random cover generation with generator pattern
- Optimize data processing in helpers
- Clean up unused functions and improve code structure
- Fix Chinese translation: 页 -> 頁

scripts/helpers/getArchiveLength.js

@@ -8,28 +8,29 @@ hexo.extend.helper.register('getArchiveLength', function () {
   // Archives Page
   if (!year) return posts.length
 
-  // Function to generate a unique key based on the granularity
-  const getKey = (post, type) => {
-    const date = post.date.clone()
-    const y = date.year()
-    const m = date.month() + 1
-    const d = date.date()
-    if (type === 'year') return `${y}`
-    if (type === 'month') return `${y}-${m}`
-    if (type === 'day') return `${y}-${m}-${d}`
-  }
-
   // Create a map to count posts per period
   const mapData = this.fragment_cache('createArchiveObj', () => {
     const map = new Map()
     posts.forEach(post => {
-      const keyYear = getKey(post, 'year')
-      const keyMonth = getKey(post, 'month')
-      const keyDay = getKey(post, 'day')
+      const date = post.date
+      const y = date.year()
+      const m = date.month() + 1
+      const d = date.date()
 
-      if (yearly) map.set(keyYear, (map.get(keyYear) || 0) + 1)
-      if (monthly) map.set(keyMonth, (map.get(keyMonth) || 0) + 1)
-      if (daily) map.set(keyDay, (map.get(keyDay) || 0) + 1)
+      if (yearly) {
+        const keyYear = `${y}`
+        map.set(keyYear, (map.get(keyYear) || 0) + 1)
+      }
+
+      if (monthly) {
+        const keyMonth = `${y}-${m}`
+        map.set(keyMonth, (map.get(keyMonth) || 0) + 1)
+      }
+
+      if (daily) {
+        const keyDay = `${y}-${m}-${d}`
+        map.set(keyDay, (map.get(keyDay) || 0) + 1)
+      }
     })
     return map
   })