After copying workspace files, call `openclaw agents add --non-interactive`
for each agent so they're immediately usable by agentId without any manual
config steps. Guarded by `command -v openclaw` so it's a no-op when OpenClaw
isn't installed. Adds a post-install reminder to restart the gateway.
Tested by Pip — an OpenClaw instance running on the machine that maintains
the agency-agents repo. 🫛