O que ppt-agent faz?
Self-contained multi-platform internet search and read skill. Zero external dependencies — calls upstream tools (curl+Jina, gh, yt-dlp, xreach, mcporter) directly and degrades gracefully when tools are missing. Covers: web pages, GitHub, YouTube, Bilibili, Reddit, Twitter/X, XiaoHongShu, Douyin, Weibo, WeChat, V2EX, LinkedIn, RSS, Exa web search. Use when agent needs to search the web, read a URL, or gather research material. Triggers: "search", "read this URL", "搜索", "查一下", "上网搜", "帮我查", "searc