Move skills system documentation from bottom to top of CLAUDE.md for better organization. Refactor Flutter asset page by extracting UI components into separate files and updating import structure for improved modularity.
在CLAUDE.md文档中新增"技能系统"章节，说明在执行任务时应优先扫描`.agents/skills/`目录并遵循相关技能指引。该技能系统优先级高于默认行为但低于用户显式指令。
