Three-reviewer pass (reuse/quality/efficiency) on the guard file:
- Drop dead `agent._interrupt_requested = False` setup: the
`_record_streamed_assistant_text` chain only consults
`_stream_writer_superseded()` (stream-writer TLS token), never
`_interrupt_requested` — verified by reading both call sites.
- Deduplicate the two trace-callback blocks into one
`_count_writer_statements` helper using the house idiom
(`statements.append` — 9 existing uses in tests/test_hermes_state.py)
instead of a mutable-dict counter closure; failure messages now dump
the captured SQL for direct diagnosis.
Dropped after verification: reviewer suggestion to flip xfail to
strict=True — its premise ("the fix PRs already remove the markers")
is wrong: #92166/#95380 predate this file and cannot remove markers
they don't contain, so strict=True would redden main's CI the moment
either merges. strict=False + follow-up marker removal is the
deliberate no-red-window ratchet.
Efficiency reviewer: no material findings (GC delta 0.06 on the ratio,
36.9MB peak, sqlite trace API stable since 3.14, dir convention OK).
Re-verified post-fold: 3x main runs (2 passed, 2 xfailed), flip checks
on both fix branches still pass with --runxfail.