The ingest HUD showed "step 70/40" because the Claude subscription runtime
re-derived a per-turn counter that could not match the SDK's num_turns and
overshot the maxTurns budget. Replace the turn-based work_unit_step heartbeat
with a real, observed tool-call count (no denominator), report
metrics.stepCount from the SDK's authoritative num_turns, and delete the
brittle countsAsAssistantTurn denylist plus the now-unused onStepFinish
callback across the runtime port and all three runtimes. Reconcile and curator
progress move to the same tool-call heartbeat.