Feishu Lite 0.2.8

修复阅读视图彩色高亮失效：阅读模式里 Obsidian 原生 == 会先于插件把 =={red}文字== 渲染成 <mark>{red}文字</mark>（花括号原样保留、默认黄底），后处理器现在会回改已生成的 <mark>：剥掉 {color} 前缀并换上插件配色，七色与默认高亮在阅读 / 编辑两种模式下表现一致。README 同步升级：新增斜杠菜单与浮动目录截图，功能展示区补齐六项配图；描述文案统一（英文改用 Lark）。发布 0.2.8。

Fixes colored highlights in reading view: Obsidian's native == handling first wraps =={red}text== into a literal <mark>{red}text</mark> (braces kept, default yellow). The postprocessor now rewrites those <mark> elements — stripping the {color} prefix and applying the plugin palette — so all seven colors behave identically in reading and editing modes. README upgraded with slash-menu and floating-outline screenshots, and copy unified (English uses Lark). Release 0.2.8.