PENDING-180's own order — (c) census, (b) counterpart, (a) instance.
The census swept 15 positive-form source assertions across 8 governed scripts
and found exactly one self-planted needle: the one the item filed.
tarbuckle-seam.py:165 searched its OWN source for a string that lives only in
tarbuckle-mumble.py:142, so it could never have found it and could only ever
pass on the copy it had planted in itself. The polarity argument predicted
siblings; there are none. The sweep bounds the problem from below — a needle
assembled from parts inside a defective control is invisible to it.
source_has() joins its needle from parts exactly as source_lacks() does, and
ships with the must-fail arm the negative form has had since it was written.
The seam control is re-aimed at the writer's file and split into two arms that
assert different things, plus S3nn.
Verified by mutation rather than by a green selftest: the repaired control
FAILS on both mutations, the old form PASSES the one that matters. 136 controls
green across the five surfaces.
The first mutation did not fail on its first run. The repair's own explanatory
comment named the truncation literally and planted a contiguous copy in the
file being searched — the bug re-created inside the sentence explaining it.
source_lacks/source_has cover the ASSERTION's needle, never the file; prose can
plant one. Warned at the site, and filed as a separate decidable question.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BsN7nKHjKBsn5bfNRRCNmo
