docs(upstream): record the 2026-10-08 reconcile against Netflix/vmaf 9cb9479f2

[lusoris]

Summary

Brings the fork's records of its Netflix/vmaf pull requests and of the tracked upstream defects up to date with upstream master 9cb9479f2 (checked 2026-10-08). Documentation and one parity-allowlist reference only; no fork code and no score changes.

• docs/development/known-upstream-bugs.md: 42 open upstream pull requests (was 15); chore(deps): Update pre-commit hooks #1588, perf(sycl): run ssimulacra2 on the device and wait once per frame in ms_ssim #1627, fix(cambi): keep the c-values walks inside short frames #1642 and fix(hip): bring motion_hip and the HIP option twins onto the CPU's arithmetic #1636 needed a rebase or a rework against 9cb9479f2 and were rebased the same day; ci: finish the ubuntu-26.04 move, give the Docs job room, and keep Cppcheck's analyser #1494 and best15 status; upstream's integer AIM change (cffd5b77d); the arm64 gap in fix(release): build the native Linux bundle on the Debian 13 release track #1602; what is new upstream since the parity pin. The parity heading (9e48141b) is not touched, and the SpEED sentence under it is left to port(upstream): libvmaf/speed: use fused antialias filter on all platforms, add AVX2 fused antialias filter and decimation (ad42c532, 9cb9479f) #2632.
• docs/state.md: dated updates on the rows for fix(core): bound pending thread-pool jobs and tighten measured lint debt #1422, fix(sycl): prevent cross-TU kernel identity collisions #1551 (both halves), fix(release): build the native Linux bundle on the Debian 13 release track #1602, chore(deps): Update msys2/setup-msys2 action to v2.33.0 #1605, perf(cli): read each input on its own thread, two frames ahead of scoring #1635, fix(hip): bring motion_hip and the HIP option twins onto the CPU's arithmetic #1636 and chore(deps): Update dependency dill to >=0.4.1 #955. No row opened or closed.
• scripts/ci/upstream_parity.d/psnr.apsnr-zero-error-plane: also names psnr: avoid overflow in the APSNR cap Netflix/vmaf#1618, which changes the same APSNR cap; docs/development/upstream-parity-allowlist.md regenerated.
• docs/rebase-notes.d/upstream-reconcile-2026-10-08.md: what a port of upstream's arm64 ADM code (8bc5a5c6a, b41d2340a) must not copy, and that fix(sycl): prevent cross-TU kernel identity collisions #1551 is closed.

Type

• docs — documentation only

Checklist

• Commits follow Conventional Commits (the commit-msg hook enforces this).
• Every commit is signed off (git commit -s; fix a branch with git rebase --signoff origin/master). See DCO sign-off.
• make format && make lint is green locally. Markdown lint, make docs-fragments-check and the state row gate were run on the changed files; no C, Python or Go changed.
• Unit tests pass: no code changed.

Bug-status hygiene (ADR-0165)

• docs/state.md updated in this PR: dated updates on existing rows, no row opened or closed.

Netflix golden-data gate (ADR-0024)

• I did not modify any assertAlmostEqual(...) score in the Netflix golden Python tests.

Deep-dive deliverables (ADR-0108)

• Research digest — no digest needed: dated status records only
• Decision matrix — no alternatives: no decision, status records only
• AGENTS.md invariant note — no rebase-sensitive invariants
• Reproducer / smoke-test command — see below
• CHANGELOG fragment — no changelog needed: documentation records only
• Rebase note — docs/rebase-notes.d/upstream-reconcile-2026-10-08.md

Reproducer

bash scripts/ci/check-state-md-rows.sh
python3 scripts/docs/generate-upstream-parity-allowlist.py --check
bash scripts/docs/concat-rebase-notes.sh --lint
npx --yes markdownlint-cli2 docs/development/known-upstream-bugs.md docs/state.md docs/development/upstream-parity-allowlist.md

Known follow-ups

• The parity pin stays at 9e48141b until the port pull requests for the commits since it land (port(upstream): libvmaf/speed: use fused antialias filter on all platforms, add AVX2 fused antialias filter and decimation (ad42c532, 9cb9479f) #2632 covers ad42c5320 and 9cb9479f2).