推进本地索引与 AI changed-files 审计

- 为本地工作区补充 search/backlinks/tags/resource 引用索引与 watcher 单文件刷新
- 在页面设置中增加索引页签，并展示本地反链、标签和 AI changed-files 审计
- 补充本地搜索与本地 AI changed-files 浏览器 smoke，并回填当前优先级 checklist

rust/crates/mnote-web/src/ssr/styles.rs

@@ -2835,6 +2835,76 @@ body {
   display: none !important;
 }
 
+.wolai-page-settings-index-panel {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.wolai-page-settings-index-status {
+  color: #8B8782;
+  font-size: 12px;
+  line-height: 18px;
+}
+
+.wolai-page-settings-index-group {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.wolai-page-settings-index-title {
+  color: #1B1C1C;
+  font-size: 13px;
+  font-weight: 600;
+  line-height: 18px;
+}
+
+.wolai-page-settings-index-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.wolai-page-settings-index-row,
+.wolai-page-settings-index-empty {
+  padding: 8px 10px;
+  border-radius: 8px;
+  background: #F7F6F4;
+}
+
+.wolai-page-settings-index-row {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.wolai-page-settings-index-row.is-tag {
+  flex-direction: row;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+}
+
+.wolai-page-settings-index-row-title {
+  min-width: 0;
+  overflow: hidden;
+  color: #1B1C1C;
+  font-size: 13px;
+  line-height: 18px;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.wolai-page-settings-index-row-meta,
+.wolai-page-settings-index-row-snippet,
+.wolai-page-settings-index-empty {
+  color: #8B8782;
+  font-size: 12px;
+  line-height: 18px;
+}
+
 .wolai-page-setting-row {
   min-height: 48px;
   display: flex;