* feat: add global-chat-agent-discovery skill for cross-protocol agent search Adds a skill for discovering MCP servers and AI agents across 18K+ entries and 6+ registries using Global Chat's directory and MCP server (@global-chat/mcp-server). Covers MCP, A2A, and agents.txt protocols. * docs: add README credit for global chat --------- Co-authored-by: pumanitro <pumanitro@gmail.com> Co-authored-by: sickn33 <sickn33@users.noreply.github.com>