fix: restyle pager chips and restore theme ad slots

Replace the loose page-count label with a SaBlog-style 6 / 316 chip, wire inject/stylevar HTML into list and post views, and flush page cache when ads are saved.

Co-authored-by: Cursor <cursoragent@cursor.com>

resources/views/partials/pagination-links.blade.php

@@ -1,6 +1,6 @@
 @if ($paginator->hasPages())
     <nav class="pagination-links" role="navigation" aria-label="分页">
-        <span class="pagination-info">第 {{ $paginator->currentPage() }} / {{ $paginator->lastPage() }} 页</span>
+        <span class="pagination-info">{{ $paginator->currentPage() }} / {{ $paginator->lastPage() }}</span>
 
         @if ($paginator->onFirstPage())
             <span class="disabled">&laquo;</span>