Document current weibo support

Tighten timing and target refresh handling

Add weibo support and fix media/cache behavior

Clean temp directory and ignore local temp files

Add Xiaohongshu workflows and unify workflow lifecycle

Refactor browser bridge architecture and x skill

docs: add CRITICAL GOTCHA inline comments to preserve deep SPA timing and Fake Ready fixes

fix(bridge): enforce extension ready signal in read-page to prevent fake ready states

docs: streamline SKILL.md to be declarative and respect agent autonomy

docs: clarify ephemeral worker architecture for async downloader

feat(x-assistant): implement zero-latency async image preloading

docs: 固化AI驱动开发范式，并新增异步图片预载系统规划

docs: 增加关于图片 Base64 提取的待研究事项

docs: 将依赖反转与插件注册模式写入架构规范和扩展 README

refactor(extension): implement plugin registry pattern for site adapters