New adapters ported from bb-sites: - bbc/news: BBC News RSS headlines (public API) - weibo/hot: 微博热搜 (browser) - boss/search: BOSS直聘搜索职位 (browser) - yahoo-finance/quote: 股票行情 (browser) - reuters/search: 路透社新闻搜索 (browser) - smzdm/search: 什么值得买搜索好价 (browser) - ctrip/search: 携程旅行搜索 (browser) - youtube/search: YouTube视频搜索 (browser) Also: build script adds clean-yaml step, docs updated to 28 commands / 16 sites