P6 repeats S7c arm Aopen on HEAD with the payload BYTE-IDENTICAL, so the only
variable is `collapse_padding` (finding 5, session 107).
(a) NO. `5647500` reaches the model -- 6 occurrences in 2 of 5 prompts, label
and amount on the same line -- and appears in 0 of 5 replies. The control
against S7c's own recording reproduces its published 6-in-2-of-11 / 0-in-11
exactly, so the null is a measurement, not a broken query.
(b) 1 of 12 delivered excerpts is named at all (the general technical
requirements, cited verbatim by concept_id); the price schedule never is.
(c) 4 of 4 code-shaped tokens in the replies are invented -- the ENGRAVE_MARK
class -- and the two amounts with them.
The fix duty does NOT fire, because cause (ii) is falsified by two
measurements: everything the collapse removed is whitespace (48 714 characters,
per-line non-whitespace sequence IDENTICAL on the real prompts), and the named
candidate -- the Post/SUM cell boundary -- was INTACT in S7c, which produced the
same null. A property present when the outcome was null cannot be the cause of
the null. The null is older than the collapse.
Pre-flight also measured what the row already implied but nobody had checked:
-72.4 % CHARACTERS is -1.8 % TOKENS (26 936 -> 26 447). A run of 887 spaces is
nearly free in BPE, so the collapse is legibility, never price.
The blind spot has moved on again: ranking (S7c) -> reading (finding 5) ->
the CHOICE of document.
Cost NOK 0.321 of a NOK 0.40 ceiling, 0 retries. Suite 1543/5, ruff and mypy
clean, golden byte-unchanged. No source file touched.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
