Closes the second and final ask from the C4 cross-review (Karpathy
specific ask #1). The previous non-ceo-dm-reply recording (409bec2)
pre-dated C4 part 3/5 by ~18 minutes, so it could not discriminate
between "non-CEO path correctly does not receive hire_agent /
file_approval" and "the tools simply had not been injected yet."
Re-recorded against anthropic/claude-sonnet-4-5 on the current main.
The VP Product agent (manager — canRequestHire=true by keyword match,
but after F3 canFileCeoStrategy=false because reportsTo is not null
AND role is not CEO) produces:
- mark_read + /api/agent_message/send + m_77 preserved — 3 positive
assertions intact.
- Zero hire_agent invocation (not asked to hire).
- Zero file_approval invocation — positive evidence the F3 split
correctly excludes file_approval from non-CEO managers. Without
F3 this call would have had file_approval in scope and a manager
under pressure might have reached for it.
Fixture assertions updated to pin the two tool-scope invariants using
the new message_does_not_contain_substring kind from F2.
C4-followup.md marked CLOSED with resolution table mapping each of
the four items to its landing commit, plus the companion cleanup
(43337e5 — RpcMethod single-source-of-truth) that came out of the
same session.
Final: typecheck green, 537 unit tests, 10 eval tests.
ZacharyZhang-NY
3ff891c6ec