dsh-hotswap: DeepSeek Harness Runtime Plugin Hot-Swap Manager

`dsh-hotswap` is a hot-swap manager for DeepSeek Harness (DSH), maintained by HongzhongL. It enables runtime hot start/stop, hot restart, and automatic bundle synchronization for Cordis plugins without restarting the `dsh web` process. Core features include immediate resource reclamation and re-importation via the Loader API, automatic profile configuration synchronization to persist plugin state, and built-in safety guardrails to protect critical components. Users can manage plugins through the DSH Web interface or by modifying the `package.json` configuration. After installation, `dsh web` must be restarted for it to take effect. This plugin does not add extra authentication and is relatively safe only when bound to 127.0.0.1, but exposing