Operator picked option 2: meta-campaign coordinating an HEVC backend
iteration (iter2 against libva-v4l2-request-fourier#3) and a VP9
kernel iteration (iter3 against kernel-agent#12) as parallel children
under one umbrella.
Iteration order: HEVC first because (a) smaller blast radius / faster
feedback loop, (b) the survey's mechanism reconstruction is a
hypothesis not yet test-verified — cheapest way to confirm is a
minimal backend patch, (c) VP9 has unresolved upstream-tree selection
that benefits from absorbing iter2 findings first. Operator may
overrule for parallel execution.
Meta-success: iter2 + iter3 both close with HEVC + VP9 added to
ampere-fourier Phase 3 instrumentation (C1-C6 against per-codec
floors); no regression to iter1 3-codec baseline; patches in right
repos (libva for HEVC, kernel-agent experiment branch for VP9, NOT
linux-ampere-fourier baseline per operator policy).
Falsifiers: iter2 patch doesn't fix HEVC -> re-open kernel-agent#11
with new evidence; iter3 tree doesn't rebase cleanly -> pick another;
Phase 7 regression to iter1 baseline -> Phase 5 review missed shared-
code interaction.
iter1 of the meta-campaign is mostly Phase 0+1+8: scoping + ledger +
close. Real engineering happens inside iter2 and iter3.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
