Rows the log holds no request for yet — the newest assistant reply, the
tool results still waiting to be sent — now wear a PENDING step stamp
instead of none. The prediction follows the harness's step loop
(agent.ts): a newest user message opens a new turn, a text-only final
reply means the turn ended, and pending tool results or an in-flight
injection continue the same turn, so the next step is lastStep + 1.
dsh names that step at step/start before the request exists — the
session log's own tail confirms the prediction (step/start Turn 1 Step
42 over exactly the rows that lacked a stamp).
The estimate reads like the confirmed stamp but with a quiet dotted
underline and a 'not yet sent' tooltip in both locales; the confirmed
stamp replaces it the moment the request logs. Past-step views never
speculate: they reconstruct only what their request already carried.
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