Sonnet-architect found one Critical pseudocode error and three
Important amendments. All mechanical; no structural plan change.
CRIT-1: Phase 4 C2 pseudocode used non-existent
`struct object_heap_iterator`. Actual API at object_heap.h:67-68 uses
`int *iterator`. Author re-verified vs request.c:411-418 canonical
usage. Verbatim paste would have compile-failed.
IMP-1: gate comment at surface.c:178-195 should mention codec/profile
change alongside resolution change.
IMP-2: dead `object_config->pixelformat` field at config.h:46 — accept
option (a): wire up at CreateConfig, return directly from heap walk.
Saves one pixelformat_for_profile() call in surface.c path.
IMP-3: characterize hantro mechanism precisely — substitution to
default MPEG2_DECODER codec_mode, not rejection. Explains why MPEG-2
worked but VP8 didn't pre-fix.
10 contract clauses scorecard: 1 FAIL (C2), 2 CONDITIONAL (C3, C10),
7 PASS. Phase 6 cleared conditionally pending all 4 amendments.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
