Teaches agents to drive the CLI: workspaces, environments, requests,
sending, response chaining, and importing. SKILL.md stays lean with
four references loaded on demand.
The skill is embedded in the binary and written to ~/.agents/skills plus
any detected tool directory, so it ships with the CLI and refreshes on
update. Reinstalls keep files edited locally unless --force.
Also fixes the `request schema http` hint for URL path parameters, which
said to omit the leading colon. Names without the colon are sent as query
string parameters instead, leaving the placeholder literal in the path.
