FactionDoctrine/RoleDoctrine (Faction key 17), Flight as the only writer of
members' Target and Task, hail/grace/compliance, FollowTask/FollowState,
agent removal on Entities removal, doctrine-catalog command, FlightTests.
Not yet built or run; verification follows in later commits.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
