feat: 添加密码管理功能，包括 API、数据库支持和前端界面

openspec/changes/archive/2026-01-22-add-dnd-sorting/proposal.md

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+# Change: Add persistent drag-and-drop sorting (folders + bookmarks)
+
+## Why
+Users need to reorder folders and bookmarks via drag-and-drop (including mobile/touch) and have that order persist across reloads. Current HTML5 drag/drop is unreliable on mobile and ordering is not stored for bookmarks.
+
+## What Changes
+- Add persistent ordering for bookmarks (new DB column and API endpoint to reorder within a folder).
+- Use a touch-friendly drag-and-drop implementation in the web UI for:
+  - Reordering folders within the same parent.
+  - Reordering bookmarks within the same folder.
+- Keep the root group (no folder) as a first-class group in the UI.
+
+## Impact
+- Affected specs: API (OpenAPI-backed)
+- Affected code:
+  - Server: migrations, bookmarks routes, admin routes, row DTO mapping
+  - Web: MyPage and AdminPage UI ordering and drag/drop
+  - OpenAPI: Bookmark schema and reorder endpoint