[bot] Add /ask, /env, MCP registry install, and plugin marketplace update commands#80

DanWahlin merged 8 commits intomaingithub/copilot-cli-for-beginners:mainfrom

update/new-cli-features-apr-2026-bbd5b10c37d71426github/copilot-cli-for-beginners:update/new-cli-features-apr-2026-bbd5b10c37d71426Copy head branch name to clipboard