dsh-session-tags: DeepSeek Harness Session Tag Management Plugin

`dsh-session-tags` is a session tag management plugin designed specifically for the DeepSeek Harness (DSH) Web GUI. It provides a self-contained host + client package with independent tag creation and deletion, tag display, and `tag:xxx` search functionality. Tag data is stored in a local JSON file, independent from logs, so it is not lost during cleanup. Installation requires modifying the pnpm configuration and force-refreshing the browser. The plugin is only compatible with the Web Profile and is suitable for users who need to quickly identify and distinguish a large number of session contexts.