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.
These are the role×trigger tripwires Karpathy required before C4 can
ship: covering IC / manager / non-CEO paths, not just the two CEO
fixtures from 1d0cfa2. Together they act as the cross-role regression
net — any C4 change that breaks hire_agent tool registration or
prompt shape across role tiers will now surface as an assertion
failure, not a silent production drift.
Fixtures recorded against anthropic/claude-sonnet-4-5 via the user's
Claude Max OAuth token (read from macOS keychain, not committed):
- ic-task-execute (364 in / 1425 out): IC receives task t_1138,
expects task id + filename in the response and a mark_complete
intent within 3 turns.
- manager-task-handoff (457 in / 1022 out): VP Engineering decomposes
CEO p99 directive into IC-sized tasks; expects /api/task/create
calls, references to agent_ic_* slugs, and the "p99" term.
- non-ceo-dm-reply (357 in / 545 out): VP Product handles a peer DM
with blocking ETA ask; expects mark_read + /api/agent_message/send
+ message id preserved.
Total spend ~3.7k tokens; pnpm test:eval --run now green at 8/8
(3 harness self-tests + 5 recorded fixtures).
With these tripwires in place, C4 (hire_agent / file_approval tool
uplift + initial-user-turn rewrite) can proceed without the previous
"only CEO path has a baseline" blind spot.
ZacharyZhang-NY