Bypassed workflow member rows were dropped before batching, so a
workflow batch only ever held its coordinator, and a Codex child's
idle turn end left the batch working forever. Let agent lifecycle rows
through the internal filter the way web does, treat idle as a finished
member, and settle members that never reported their own end when the
coordinator finishes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>