Refine skill catalog installation flow

Move skill installation into dedicated detail pages and keep installed-state rendering compatible with SwiftUI result builders.

CHANGELOG.md

@@ -13,7 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **Learned speaking styles**: unlock user-initiated style generation after 5,000 effective dictation characters, prioritize recurring native speech and explicit user edits, use historical polish prompts only to subtract AI-added style, and require review before saving. / **学习说话风格**：累积 5,000 个有效听写字符后，可优先根据反复出现的原生口述与用户明确编辑生成个人风格，历史润色 Prompt 仅用于排除 AI 附加风格，并在保存前强制检查。
 
 ### Changed
-- **Skill catalog layout**: replace the two-column skill cards with compact full-width list rows while preserving enable, detail, and long-press reorder interactions. / **技能目录布局**：将双列技能卡片改为紧凑的通栏列表，同时保留启用、详情与长按排序交互。
+- **Skill catalog layout**: replace the two-column cards with scroll-safe installed and uninstalled lists; selecting a row now opens a full detail page where installation, Shortcut setup, and custom-skill editing are managed. / **技能目录布局**：将双列卡片改为可稳定滚动的已安装与未安装列表；点击列表项进入完整详情页，并统一管理安装、捷径配置与自定义技能编辑。
 
 ### Fixed
 - **Repeatable OOBE practice**: scope each free feature to one use per short-lived guided session, so returning to OOBE starts a fresh four-page experience without misreporting consumed-page conflicts as weak network; also simplify lesson titles, add a voice sample to read aloud, and streamline the completion page. / **可重复的 OOBE 体验**：将每项免费功能限制为每个短期引导会话使用一次，让用户重新进入 OOBE 时可以重新体验四个页面，并避免把页面已完成冲突误报为弱网；同时精简各环节标题，加入语音朗读示例，并简化完成页。