dsh-model-fold

DSH plugin: model picker grouped by provider — sources listed first, click a source to open its models in a slide-in side panel (or inline fold), double-click a source to switch modes, current-model badge, theme-aware, DOM-only enhancement, zero network requests. 模型选择菜单按来源分组：来源列表+右侧滑出面板/行内折叠双模式+双击切换+当前选中徽标，纯 DOM 增强零网络请求的 DSH 插件。