Adds a bullet to the Subagent orchestration section in AGENTS.md so
coordinators treat merged-PR cleanup as one atomic step: verify the
merge, force-remove the worktree (double -f, since this repo's test
runs initialize submodules), and delete both the feature branch and
any Agent-tool-generated worktree-agent-<id> isolation branch.
Fixes#75
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FNJWdVvdgvZCHi1hZGqgVQ