Implementation verified on macOS (task 6.4 confirmed spawn + adoption
behavior). Archives the change under
openspec/changes/archive/2026-07-14-host-agent-dependency-supervisor/ and
syncs the delta spec into a new main capability at
openspec/specs/host-agent-dependency-supervisor/spec.md (5 baseline
requirements covering opt-in default, adopt-don't-fight, spawn, bounded
backoff restart, and lifecycle tied to Host Agent). openspec validate
--strict passes on the synced spec.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>