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

Cargo.lock

@@ -2105,7 +2105,7 @@ dependencies = [
 
 [[package]]
 name = "secrets-mcp"
-version = "0.5.26"
+version = "0.5.27"
 dependencies = [
  "anyhow",
  "askama",