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>

public/themes/sablog/style.css

@@ -370,34 +370,63 @@ a:hover {
     width: 100%;
     max-width: 100%;
     min-width: 0;
-    margin: 12px 0;
+    margin: 14px 0;
+    clear: both;
 }
 .pagination-links {
     display: flex;
-    gap: 4px;
+    gap: 1px;
     flex-wrap: wrap;
     align-items: center;
     max-width: 100%;
-    margin: 12px 0;
+    margin: 0;
 }
 .pagination-info {
-    color: #888;
+    background: #f5fbff;
+    border: 1px solid #86b9d6;
+    color: #336;
     font-size: 12px;
-    margin-right: 6px;
+    padding: 2px 6px;
+    margin-right: 4px;
     white-space: nowrap;
 }
 .pagination-links a,
 .pagination-links .current,
 .pagination-links .disabled {
-    padding: 2px 7px;
-    border: 1px solid #d8dfe6;
+    padding: 2px 6px;
+    border: 1px solid #dedeb8;
     background: #fff;
     font-size: 12px;
     line-height: 1.4;
+    min-width: 1.6em;
+    text-align: center;
+    text-decoration: none;
+}
+.pagination-links a:hover {
+    background: #f5fbff;
+    border-color: #86b9d6;
 }
 .pagination-links .current {
-    background: #1c62b0;
-    color: #fff;
+    background: #ffffd9;
+    color: #92a05a;
+    font-weight: 700;
+    border-color: #dedeb8;
+}
+.pagination-links .disabled {
+    color: #999;
+}
+.theme-inject {
+    margin: 8px 0;
+    max-width: 100%;
+    overflow: hidden;
+}
+.theme-inject:empty {
+    display: none;
+}
+.theme-inject img,
+.theme-inject iframe {
+    max-width: 100%;
+    height: auto;
 }
 
 #footer {