codex seems to lose track of its subagents sometimes and forget to push them forward. the fix is to use a heartbeat sweep. just queue this up in your orchestrator thread: Heartbeat sweep. Do a full orchestrator pass across all work in flight right now and keep executing until I explicitly stop you. Your job on each sweep: 1. Check every active subagent and every active lane of work. 2. Verify each subagent is actually making progress, not just alive. 3. If a subagent is stalled, vague,…