Task Status System

All tasks share a unified TaskPhase state machine:

pending → processing ⇄ holding → completed → accepted → finished
              ↓                       ↓
           failed ──(retry)──→ processing

pending/holding → blocked (dependency failed)
any non-terminal → cancelled

Status	Meaning
pending	Created, waiting to start
processing	Agent actively executing
holding	Waiting for child tasks / CEO response
completed	Done, awaiting supervisor review
accepted	Supervisor approved (unblocks dependents)
finished	Archived after retrospective
failed	Execution failed (retryable)
blocked	Dependency failed
cancelled	Cancelled by CEO or supervisor

Simple vs Project tasks use the same state machine. The difference is auto-skip:

• Simple: completed → auto accepted → auto finished
• Project: completed → manual review → EA retrospective → finished

All transitions enforced through transition() in task_lifecycle.py.