feat(secrets-mcp): /entries 按 tags 筛选，发版 0.5.27

- Web：tags 查询参数、folder 计数 SQL、分页与 tab 保留 tags；模板与 i18n
- README / AGENTS / CHANGELOG；plans/web-tags-filter 等计划文档

crates/secrets-mcp/templates/entries.html

@@ -543,6 +543,10 @@
                 <label for="filter-name" data-i18n="filterNameLabel">名称</label>
                 <input id="filter-name" name="name" type="text" value="{{ filter_name }}" data-i18n-ph="filterNamePlaceholder" placeholder="输入关键字" autocomplete="off">
             </div>
+            <div class="filter-field">
+                <label for="filter-tags" data-i18n="filterTagsLabel">标签</label>
+                <input id="filter-tags" name="tags" type="text" value="{{ filter_tags }}" data-i18n-ph="filterTagsPlaceholder" placeholder="多个标签用逗号分隔" autocomplete="off">
+            </div>
             <div class="filter-field">
                 <label for="filter-metadata-query" data-i18n="filterMetadataLabel">元数据值</label>
                 <input id="filter-metadata-query" name="metadata_query" type="text" value="{{ filter_metadata_query }}" data-i18n-ph="filterMetadataPlaceholder" placeholder="搜索元数据值" autocomplete="off">
@@ -643,13 +647,13 @@
         {% if total_count > 0 %}
         <div class="pagination">
             {% if current_page > 1 %}
-            <a href="?{% if !filter_folder.is_empty() %}folder={{ filter_folder | urlencode }}&{% endif %}{% if !filter_type.is_empty() %}type={{ filter_type | urlencode }}&{% endif %}{% if !filter_name.is_empty() %}name={{ filter_name | urlencode }}&{% endif %}{% if !filter_metadata_query.is_empty() %}metadata_query={{ filter_metadata_query | urlencode }}&{% endif %}page={{ current_page - 1 }}" class="page-btn" data-i18n="prevPage">上一页</a>
+            <a href="?{% if !filter_folder.is_empty() %}folder={{ filter_folder | urlencode }}&{% endif %}{% if !filter_type.is_empty() %}type={{ filter_type | urlencode }}&{% endif %}{% if !filter_name.is_empty() %}name={{ filter_name | urlencode }}&{% endif %}{% if !filter_tags.is_empty() %}tags={{ filter_tags | urlencode }}&{% endif %}{% if !filter_metadata_query.is_empty() %}metadata_query={{ filter_metadata_query | urlencode }}&{% endif %}page={{ current_page - 1 }}" class="page-btn" data-i18n="prevPage">上一页</a>
             {% else %}
             <span class="page-btn page-btn-disabled" data-i18n="prevPage">上一页</span>
             {% endif %}
             <span class="page-info">{{ current_page }} / {{ total_pages }}</span>
             {% if current_page < total_pages %}
-            <a href="?{% if !filter_folder.is_empty() %}folder={{ filter_folder | urlencode }}&{% endif %}{% if !filter_type.is_empty() %}type={{ filter_type | urlencode }}&{% endif %}{% if !filter_name.is_empty() %}name={{ filter_name | urlencode }}&{% endif %}{% if !filter_metadata_query.is_empty() %}metadata_query={{ filter_metadata_query | urlencode }}&{% endif %}page={{ current_page + 1 }}" class="page-btn" data-i18n="nextPage">下一页</a>
+            <a href="?{% if !filter_folder.is_empty() %}folder={{ filter_folder | urlencode }}&{% endif %}{% if !filter_type.is_empty() %}type={{ filter_type | urlencode }}&{% endif %}{% if !filter_name.is_empty() %}name={{ filter_name | urlencode }}&{% endif %}{% if !filter_tags.is_empty() %}tags={{ filter_tags | urlencode }}&{% endif %}{% if !filter_metadata_query.is_empty() %}metadata_query={{ filter_metadata_query | urlencode }}&{% endif %}page={{ current_page + 1 }}" class="page-btn" data-i18n="nextPage">下一页</a>
             {% else %}
             <span class="page-btn page-btn-disabled" data-i18n="nextPage">下一页</span>
             {% endif %}
@@ -713,6 +717,8 @@ var SECRET_TYPE_OPTIONS = JSON.parse(document.getElementById('secret-type-option
       allTab: '全部',
       filterNameLabel: '名称',
       filterNamePlaceholder: '输入关键字',
+      filterTagsLabel: '标签',
+      filterTagsPlaceholder: '多个标签用逗号分隔',
       filterMetadataLabel: '元数据值',
       filterMetadataPlaceholder: '搜索元数据值',
       filterTypeLabel: '类型',
@@ -799,6 +805,8 @@ var SECRET_TYPE_OPTIONS = JSON.parse(document.getElementById('secret-type-option
       allTab: '全部',
       filterNameLabel: '名稱',
       filterNamePlaceholder: '輸入關鍵字',
+      filterTagsLabel: '標籤',
+      filterTagsPlaceholder: '多個標籤用逗號分隔',
       filterMetadataLabel: '中繼資料值',
       filterMetadataPlaceholder: '搜尋中繼資料值',
       filterTypeLabel: '類型',
@@ -885,6 +893,8 @@ var SECRET_TYPE_OPTIONS = JSON.parse(document.getElementById('secret-type-option
       allTab: 'All',
       filterNameLabel: 'Name',
       filterNamePlaceholder: 'Enter keywords',
+      filterTagsLabel: 'Tags',
+      filterTagsPlaceholder: 'Comma-separated tags',
       filterMetadataLabel: 'Metadata value',
       filterMetadataPlaceholder: 'Search metadata values',
       filterTypeLabel: 'Type',