When deacon patrol molecules completed, their child step wisps were not being
closed automatically. This caused orphan wisp accumulation - 143+ orphaned
wisps were found in one cleanup session.
The fix ensures that when a molecule completes (via gt done or gt mol step done),
all descendant step issues are recursively closed before the molecule itself.
Changes:
- done.go: Added closeDescendants() call in updateAgentStateOnDone before
closing the attached molecule
- molecule_step.go: Added closeDescendants() call in handleMoleculeComplete
for all roles (not just polecats)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>