The merge of origin/master at 9f218ce9d took master's re-recorded parent
session.jsonl wholesale, which reverted this branch's todo_write
description in that one file while the two child logs kept the new
parallel-in_progress text. The headless snapshot scrubs request headers
before comparison, so the three logs disagreed on the model-visible
tool contract without any test failing.
Re-record the scenario with test:snapshot:refresh, which replays the
committed scripts and rewrites all three persisted-log fixtures from the
live run. The parent regains the parallel-in_progress todo_write
description; both children pick up master's current run_code description
and its required `description` parameter, which they were stale on.
Fixture content only; no source or contract change, so the owning Agent
Note stands as written.
The re-records for the SDK-prompt change had harvested live v4-pro
headers while every replay overlay pins v4-flash, so keyless replay
diverged on provenance; keyless refresh reconciles the affected
scenarios (dispatch-start pairs preserved).
The scripted (non-recorded) fixtures' run_code calls predate the required
description parameter, so replay rejected them at validation before any
dispatch: patch the scripted programs' args (tool/call, message blocks,
and chunk deltas together) and refresh goldens keylessly. Also picks up
the v4-pro re-records of the code-mode scenario pair whose live model
drifted from the overlay pin, and drops tmp-path churn.
Remove the single-in_progress cap from todo_write execute validation and
the durable-log invariant so a task list can mirror genuinely parallel
work (concurrent subagents, background commands). Update the tool
description to instruct marking every actively worked task in_progress,
refresh the tool catalog and keyless snapshot expected outputs, and
record the decision in a new Agent Note superseding the original cap.
A subagent child's recursion depth lived only in runtime AgentOptions,
so a persisted child came back from resume counted as top-level and
maxDepth stopped binding after every restart. Add
SessionHeader.delegationDepth, round-trip it through the JSONL and
SQLite backends (SQLite schema v5), restore it on agent-loop resume,
and write it when the in-process backends create a child. The seam now
owns the shared depth vocabulary (delegationDepthOf): the persisted
header is authoritative and monotone — runtime options may deepen it
but never lower it.
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