v1.0.0 — 输入框推理等级滑块 / composer reasoning-effort slider

把输入框里的推理等级选择改成卡片式滑块：拖拽、点击轨道、方向键、Home/End，一键重置回默认档；模型二级菜单保留分组与搜索。跟随明暗主题，中英文文案。

Replaces the composer reasoning-effort picker with an inline slider card; the shipped selector keeps working (shadowed at slot priority -1).

Install / 安装:

dsh plugin --profile <profile> add github:aci825223-ai/dsh-reasoning-slider

Then refresh the page. / 装好后刷新页面。