perf(mmle): use matrix-vector EAP projection

[seonghobae]

Purpose

Rebase the reviewed NumPy fallback EAP projection onto current protected main without retaining the stale/diverged predecessor branch.

Change

• replace (posterior * nodes[None, :]).sum(axis=1) with the mathematically equivalent posterior @ nodes;
• avoid the additional posterior-shaped element-wise product;
• preserve quadrature, posterior normalization, missingness, initialization, M-step, stopping, return transport, public signatures, and the Rust production backend;
• retain the independent one-iteration missing-data parity regression and source-path allocation contract;
• retain APA 7 doctoring and the authoritative changelog fragment.

Merge gates

• render the fragment into the current managed CHANGELOG.md without losing intervening release notes;
• run exact-head Python, Rust/PyO3, package, explicit GPU no-skip, fuzz, Security Scan, and SAST;
• require current-head automated review, qualifying non-author approval, and zero actionable threads;
• make no universal performance claim and do not alter public APIs, dependencies, workflows, model identities, or versioning.

Supersedes stale/diverged PR #549. No release is included.

[coderabbitai]

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[seonghobae]

@opencode-agent address

Complete this current-main replacement without scope expansion:

1. run the repository's authoritative changelog-fragment renderer and commit only its managed CHANGELOG.md result;
2. run the focused parity/source tests, full Python coverage/docstrings, Rust/PyO3, package reinstall, explicit GPU no-skip, fuzz, Security Scan, and SAST on the exact head;
3. confirm the diff remains exactly the one-line posterior @ nodes projection plus its test, APA 7 doctoring, fragment, and rendered changelog;
4. after GREEN, update the PR evidence, remove needs-revision/do-not-merge, request exact-head independent review, and keep merge subordinate to protections.

Do not force-push, alter public APIs or workflows, claim a universal speedup, create another PR, or merge without the current-head gates.

[seonghobae]

@opencode-agent address

Exact head 2bd6d40116f6209d7daa2acd5d66213230b5e80e has one failing gate only: CI run 31136830668, Python job 92737929237, reports 1 failed, 2913 passed, 2 skipped. The failure is tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments; CHANGELOG.md is stale relative to docs/changelog.d/mmle-fallback-eap-matmul.md.

Make one ordinary direct documentation commit on perf/mmle-eap-matmul-current-main by running:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md

Do not alter the numerical implementation, test fixture, fragment, workflow, dependency, version, or branch state. Then rerun the full exact-head CI, Security Scan, and SAST. Keep Draft until every check, current-head review, and independent approval pass.

[seonghobae]

@opencode-agent address

Refetch PR #568 and repair the exact live head only; predecessor-head evidence is stale. Current head d0b29282cf7f20f1b474e314731f5a2c1373651a has exact-head Security Scan and SAST green. CI run 31154371852 proves Rust/PyO3, package reinstall/release-acceptance, explicit GPU no-skip, and fuzz are green; Python has exactly one deterministic failure after 2,913 passed, 2 skipped: tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments.

Run the repository-owned renderer against the current branch:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py

The authoritative fragment is docs/changelog.d/mmle-fallback-eap-matmul.md. Preserve every intervening protected-main Unreleased note. Commit only the necessary rendered CHANGELOG.md synchronization unless the renderer exposes a separate genuine defect. Do not alter python/fast_mlsirm/estimators/mmle.py, the reviewed posterior @ nodes arithmetic, its parity/source test, fragment wording, public APIs, dependencies, workflows, version, branch protection, Draft state, reviewer identities, or release state. Then rerun the complete exact-head CI, Security Scan, SAST, and current-head review gates. Keep Draft until the unchanged repaired head is fully green and independently approved.

[seonghobae]

@jules Repair the sole exact-head CI failure on this Draft branch without changing the MMLE implementation or test semantics. CI 31136830668 has Rust, package, GPU no-skip, fuzz, Security Scan, and SAST green; Python has 2913 passed, 2 skipped with exactly one failure: test_repository_changelog_is_rendered_from_current_fragments.

Run:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md

Commit only the deterministic managed CHANGELOG.md update. Then rerun exact-head CI. Do not alter the EAP posterior @ nodes change, its parity/source regression, dependencies, workflows, version, branch protection, review state, or release state. Keep Draft until the unchanged head is fully green and independently reviewed.

[seonghobae]

@jules Repair the sole exact-head CI failure on 2bd6d40116f6209d7daa2acd5d66213230b5e80e without changing the numerical slice. CI run 31136830668 has 2,913 Python tests passing, Rust/PyO3, package acceptance, explicit GPU no-skip, fuzz, Security Scan, and SAST green; only the authoritative changelog contract failed. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md followed by --check, commit the rendered file normally, and rerun all exact-head gates. Do not alter the EAP equation, tests, doctoring, dependencies, or release version.

[seonghobae]

The exact head is functionally green except for the authoritative changelog contract: 2,913 tests passed and only test_repository_changelog_is_rendered_from_current_fragments failed. Run PYTHONPATH=python python scripts/render_changelog_fragments.py --update CHANGELOG.md, commit the rendered file, and rerun the full exact-head CI. The Rust, package, GPU no-skip, fuzz, Security Scan, and SAST jobs already pass on 2bd6d40116f6209d7daa2acd5d66213230b5e80e. Keep the PR draft until the new full suite and review complete.

[seonghobae]

@jules On exact head 2bd6d40116f6209d7daa2acd5d66213230b5e80e, perform the single remaining repository-owned repair: run python scripts/render_changelog_fragments.py --update CHANGELOG.md, commit only the deterministic managed CHANGELOG.md result, and leave the PR Draft. Do not modify the fragment, production code, tests, dependencies, workflows, version, or branch history. After the commit, run the focused changelog contract and report any residual failure on the PR; repository CI will provide the authoritative unchanged-head full-suite evidence.

[seonghobae]

Current-head repair contract: render and commit authoritative CHANGELOG.md, then rerun the complete exact-head CI. The existing head already has Rust, package, GPU no-skip, fuzz, Security Scan, and SAST success; Python has one deterministic changelog-parity failure after 2,913 passing tests. Keep Draft until the replacement head is fully green and reviewed.

[seonghobae]

@opencode-agent address

Repair exact current Draft head 2bd6d40116f6209d7daa2acd5d66213230b5e80e. The implementation, realistic one-iteration missing-data parity regression, allocation contract, APA 7 doctoring, and changelog fragment are already present. Exact-head CI run 31136830668 has one actionable failure only: the managed CHANGELOG.md differs from the authoritative fragments.

Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then python scripts/render_changelog_fragments.py --check; commit only the deterministic managed-block result. Do not alter the EAP projection, public APIs, dependencies, workflows, model identities, versioning, or fragment. Keep Draft until the unchanged repaired head passes complete Python statement/branch coverage and docstrings, Rust/PyO3, package reinstall, explicit GPU no-skip, fuzz, Security Scan, SAST, exact-head automated review, qualifying independent approval, and unresolved-thread policy. Do not merge.

[seonghobae]

/oc

Fix the sole exact-head CI failure directly: render the authoritative fragment set into the managed CHANGELOG.md block with python scripts/render_changelog_fragments.py --update CHANGELOG.md, preserving every current-main and intervening Unreleased note. Do not change the already-green matrix-vector EAP implementation, parity/source tests, dependencies, workflows, public API, model identity, or version.

Then run python scripts/render_changelog_fragments.py --check CHANGELOG.md, pytest tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py -q, the complete Python suite, git diff --check, and leave the PR Draft until the new exact head has fresh Python/Rust/PyO3/package/GPU-no-skip/fuzz/Security/SAST evidence. Do not add a one-shot or self-mutating workflow.

[seonghobae]

@opencode-agent address

Current exact Draft head now contains one inert deterministic patch at docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. Apply only that reviewed CHANGELOG insertion, delete the patch file, and verify renderer parity:

set -euo pipefail
git apply --check docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
git apply docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
rm docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
python scripts/render_changelog_fragments.py --check CHANGELOG.md
git diff --check

Commit only the managed CHANGELOG.md repair and patch-file deletion. Do not change production code, tests, doctoring, fragment, dependencies, workflow, version, model identity, or branch history. Keep Draft and let the exact-head complete CI, Rust/PyO3, package, real GPU no-skip, fuzz, Security Scan, SAST, and independent review run again.

[seonghobae]

@opencode-agent address

Current head 9bbb88680b3b435024a275bcf81899bcc59db2df contains the exact rendered changelog delta only as docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. Finish the normal source commit:

git apply --check docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
git apply docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
rm -rf docs/superpowers/patches
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py

The final PR diff must contain the one-line posterior @ nodes implementation, its parity/source regression, APA 7 doctoring, fragment, and authoritative rendered CHANGELOG.md—not a transport patch artifact. Then run all exact-head gates and keep Draft pending independent review.

[seonghobae]

@jules The latest head 9bbb88680b3b435024a275bcf81899bcc59db2df still does not contain the rendered changelog. It added docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch, while CI 31141609467 again reports 1 failed, 2913 passed, 2 skipped at the authoritative changelog contract. Patch transport artifacts are not release evidence.

Apply that patch to the real CHANGELOG.md, then delete docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. The final PR file inventory must be exactly:

• CHANGELOG.md
• docs/changelog.d/mmle-fallback-eap-matmul.md
• docs/doctoring/mmle-fallback-eap-matmul.md
• python/fast_mlsirm/estimators/mmle.py
• tests/test_mmle_fallback_eap_matmul.py

No patch-part, workflow, helper, dependency, version, or other source file. Run renderer --check, focused tests, and the full exact-head suite. Keep Draft until the replacement head is fully green.

[seonghobae]

@jules Apply the single inert changelog patch already committed on this Draft branch, delete the patch file, run the repository changelog renderer check, and commit only CHANGELOG.md plus the patch deletion. Do not modify production code, tests, fragment, doctoring, dependencies, workflows, versioning, or branch history. Keep Draft for fresh exact-head full-suite and independent review evidence.

[seonghobae]

/oc

The exact-head CI now proves the product change itself is correct: Rust, fuzz, explicit GPU no-skip, package acceptance, Security Scan, SAST, and 2,913 of 2,914 Python tests pass. Finish the branch directly with repository hygiene only.

1. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then require --check to pass. The authoritative fragment is docs/changelog.d/mmle-fallback-eap-matmul.md.
2. Remove temporary implementation artifacts .github/workflows/dev-568-source-snapshot.yml and docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch from the final tree. Permanent CI already owns validation; no branch-writer/snapshot workflow belongs in the product diff.
3. Keep only the production mmle.py matrix-vector change, its focused regression, authoritative changelog fragment, APA 7 doctoring, and rendered CHANGELOG.md update. Do not change dependencies, public APIs, model identity, statistical semantics, version, or the Rust primary backend.
4. Run the changelog contract, focused MMLE fallback test, full Python suite, Rust/PyO3, package reinstall, explicit GPU no-skip, fuzz, Security Scan, SAST, compilation, and git diff --check on the workflow-free head.

Keep Draft until that exact head is fully green, then request current-head review and enable protected auto-merge.

[seonghobae]

@jules Exact current Draft head is 3669b3d5d4fe8443ce14e0c30f1fdeb30e47b4d4. The intended managed-block change is still stored only as docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch; CHANGELOG.md itself remains absent from the PR diff, so the authoritative renderer gate is still unsatisfied.

Apply that patch by running the repository renderer against the exact current fragments, commit the resulting CHANGELOG.md, verify python scripts/render_changelog_fragments.py --check CHANGELOG.md, and delete the temporary patch file. Do not modify the already-reviewed EAP implementation, tests, doctoring, public APIs, dependencies, workflows, or version. Keep Draft until the unchanged committed head is fully GREEN and independently reviewed.

[seonghobae]

@jules Apply the repository renderer directly on the current Draft branch: remove docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch, run python scripts/render_changelog_fragments.py --update CHANGELOG.md, verify with --check, run pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py, and commit the ordinary rendered CHANGELOG.md. Do not alter the numerical implementation, fragment, dependencies, version, or Draft state.

[seonghobae]

@opencode-agent fix

Apply the existing reviewed patch file to the real CHANGELOG.md, verify python scripts/render_changelog_fragments.py --check CHANGELOG.md, and delete docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. Do not change any other file. The resulting PR inventory must be the five real product/evidence files listed in the preceding review comment. Keep Draft; do not approve, merge, release, or alter protections.

[seonghobae]

@jules Fix this existing Draft PR in place. The exact current head 3669b3d5d4fe8443ce14e0c30f1fdeb30e47b4d4 has one failing test only: test_repository_changelog_is_rendered_from_current_fragments. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then python scripts/render_changelog_fragments.py --check CHANGELOG.md and the focused changelog/MMLE tests. Delete docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch; it is temporary execution material and must not remain in the final product diff. Commit only the rendered CHANGELOG.md and that deletion on perf/mmle-eap-matmul-current-main. Do not change the one-line numerical implementation, fixture, fragment, dependencies, workflows, version, Draft state, protections, or create another PR. Then run the complete exact-head CI, Security Scan, and SAST.

[seonghobae]

@opencode-agent address

Exact head 3669b3d5d4fe8443ce14e0c30f1fdeb30e47b4d4 has one failing gate only: CI run 31142733383, Python job 92755810371, reports 1 failed, 2913 passed, 2 skipped; Rust, package, GPU-no-skip, fuzz, Security Scan, and SAST are successful. The failure is tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments: CHANGELOG.md is stale relative to the authoritative fragments.

Make one ordinary direct documentation commit on perf/mmle-eap-matmul-current-main by running exactly:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md

Do not alter the EAP implementation, numerical fixture, fragment, workflow, dependency, lockfile, version, or branch state. Then rerun the full exact-head CI, Security Scan, and SAST. Keep Draft until every current-head check, review, and independent approval passes.

[seonghobae]

@jules Fix the only current exact-branch CI failure from run 31142733383, Python job 92755810371: CHANGELOG.md is stale relative to docs/changelog.d/mmle-fallback-eap-matmul.md. Apply the already staged changelog patch as ordinary source, delete docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch, then run python scripts/render_changelog_fragments.py --update CHANGELOG.md so all intervening fragments are preserved. Re-run tests/test_changelog_fragment_contract.py, tests/test_mmle_fallback_eap_matmul.py, and the complete Python suite. Do not change the reviewed posterior @ nodes behavior, public APIs, dependencies, workflows, model identity, package version, or Rust production backend.

[seonghobae]

@jules Exact-head CI diagnosis for 3669b3d5d4fe8443ce14e0c30f1fdeb30e47b4d4: Rust, package, explicit GPU no-skip, fuzz, Security Scan, and SAST are green; Python has one release-contract failure only. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, commit only the deterministic tracked CHANGELOG.md result, then run python scripts/render_changelog_fragments.py --check CHANGELOG.md and the focused changelog contract before full exact-head CI. Do not alter the EAP matrix-vector implementation or broaden scope. Keep Draft until the rendered head receives current-head automated and independent approval.

[seonghobae]

@opencode-agent address

Current exact head 0d535e5489157270cb4591ca4dff72197208053c still carries two non-product artifacts in the PR diff: .github/workflows/dev-source-snapshot.yml and docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. Remove both, apply the changelog patch as ordinary CHANGELOG.md source, and leave only the one-line numerical change, permanent parity/allocation test, APA 7 doctoring, authoritative fragment, and rendered changelog.

Run:

git apply --check docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
git apply docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch
rm docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch .github/workflows/dev-source-snapshot.yml
python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py
python -m compileall -q python/fast_mlsirm/estimators/mmle.py tests/test_mmle_fallback_eap_matmul.py
git diff --check

If git apply reports the managed block is already rendered, verify exact content and delete the patch without a duplicate insertion. Commit reviewed product source only. Keep Draft until one unchanged head passes the complete Python/Rust/PyO3/package/GPU-no-skip/fuzz/Security/SAST surface and fresh independent review. Do not create another snapshot/writer workflow, alter dependencies/public APIs/model identity/version, force-push, merge, release, or mark Ready.

[seonghobae]

@jules Before Ready status, remove the two transport-only artifacts still present in the PR diff: .github/workflows/dev-source-snapshot.yml and docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. The current source snapshot has already served its inspection purpose, and the changelog patch has been rendered into tracked CHANGELOG.md; neither belongs in the production change. Preserve only the MMLE source change, focused regression, APA 7 doctoring, fragment, and rendered changelog. Re-run exact-head checks after deletion.

[seonghobae]

@opencode-agent address

Exact current Draft head: 0d535e5489157270cb4591ca4dff72197208053c.

The sole product failure remains the managed changelog contract. Apply the repository-owned renderer on this exact branch:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py

Commit the deterministic CHANGELOG.md result, delete .github/workflows/dev-source-snapshot.yml, and delete docs/superpowers/patches/2026-08-07-mmle-eap-changelog.patch. Do not alter the EAP implementation, tests, fragment, doctoring, dependencies, public APIs, model identity, version, or branch history. Keep Draft until the unchanged repaired head passes all repository gates and independent review.

[seonghobae]

@jules CI 31145617863 on 0d535e5489157270cb4591ca4dff72197208053c has 2,913 passing tests; the sole failure is still test_repository_changelog_is_rendered_from_current_fragments. Re-run the renderer against the branch's current fragment set after removing the transport-only source-snapshot workflow and patch file: python scripts/render_changelog_fragments.py --update CHANGELOG.md, then --check. Commit the deletions and freshly rendered changelog together so the next exact head has no transport artifacts and one authoritative Unreleased block.

[seonghobae]

/oc

Continue from the exact current head. The final product diff must contain only the MMLE fallback EAP matrix-vector production change, its focused parity/allocation regression, authoritative changelog fragment, APA 7 doctoring, and rendered CHANGELOG.md. Run render_changelog_fragments.py --update and --check; remove dev-568-source-snapshot.yml, patch journals, and every temporary branch-writer or staging artifact. Preserve all statistical semantics, public APIs, version, dependencies, and Rust as primary backend. Rerun the focused test, complete Python suite at 100% statement/branch coverage and public docstrings, Rust/PyO3, package, explicit GPU no-skip, fuzz, Security Scan, SAST, compilation, and git diff --check. Resolve only addressed threads and mark Ready only when the workflow-free exact head is green. Do not merge or bypass protection.

[seonghobae]

@opencode-agent Please repair only the deterministic authoritative-changelog failure on exact current head e397f0d70d1469f1ab708d794544ca07ce235af2.

The branch was cleanly replayed onto protected main commit 29570236d86aa6eb819da246a0c44c310764f3c7; it now changes only the fallback EAP implementation, its independent parity/allocation test, APA 7 doctoring, and docs/changelog.d/mmle-fallback-eap-matmul.md. Run the repository-owned renderer exactly as required:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md

Commit only the resulting current-fragment rendering of CHANGELOG.md. Preserve all intervening main release notes and current fragments. Do not add a workflow, patch/journal artifact, dependency, test exemption, coverage exclusion, or unrelated refactor. Re-read the live head before writing and abort if it moved.

[seonghobae]

@opencode-agent @jules

Exact-current-head completion gate for e397f0d70d1469f1ab708d794544ca07ce235af2 against protected main 29570236d86aa6eb819da246a0c44c310764f3c7: this reopened canonical PR has fresh exact-head Security Scan and SAST success and CI currently running, but its changed-file set is still only the four scientific artifacts and therefore CHANGELOG.md is not yet synchronized from the authoritative fragment. The previous changelog failures were deterministic and this head has not addressed them.

Apply one ordinary direct documentation commit only:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py
git diff --check

Before commit, compare to current protected main and prove the PR diff contains exactly five paths: the existing four plus CHANGELOG.md, with every unrelated live-main Unreleased note preserved. Do not modify the numerical line, parity test, doctoring, fragment wording, dependencies, workflows, version, API, or branch protection. Then rerun all exact-head CI/security/review gates. #572 is closed as the duplicate; do not create or reopen another competing path. Keep Draft and do not merge or approve until the unchanged replacement head is fully green and independently approved.

[seonghobae]

/oc

Abort unless the live branch is still perf/mmle-eap-matmul-current-main at exact head e397f0d70d1469f1ab708d794544ca07ce235af2. Exact-head CI 31174646857 is now complete: Rust/PyO3, package/release acceptance, explicit GPU no-skip, and fuzz all succeeded; Security Scan 31174646888 and SAST 31174646821 succeeded; Python produced exactly 1 failed, 2916 passed, 2 skipped, with the sole failure tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments. Apply only the deterministic repository repair: python scripts/render_changelog_fragments.py --update CHANGELOG.md, verify --check, run pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py and git diff --check, and commit only the generated CHANGELOG.md. Before commit, require the PR diff against protected main 29570236d86aa6eb819da246a0c44c310764f3c7 to contain exactly five paths: generated CHANGELOG.md, the existing EAP fragment, EAP doctoring, python/fast_mlsirm/estimators/mmle.py, and tests/test_mmle_fallback_eap_matmul.py; preserve every current-main Unreleased entry including merged #570. Do not edit numerical source, test, fragment, doctoring, API, dependencies, workflows, version, Draft/protection/reviewer state, or create another branch/PR/patch/workflow. After commit let all exact-new-head gates rerun; predecessor evidence does not transfer.

[seonghobae]

@opencode-agent address

Operate only if the live PR head is still exactly e397f0d70d1469f1ab708d794544ca07ce235af2; abort without writing if it moved. Exact-head CI 31174646857 has Rust, package/reinstall/release-acceptance, explicit GPU no-skip, and fuzz GREEN; Security Scan 31174646888 and SAST 31174646821 are GREEN. Python completed 2,916 passing tests with only one deterministic failure: test_repository_changelog_is_rendered_from_current_fragments.

Do only the required deterministic repair on this existing branch:

1. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md from the current exact head, preserving all protected-main Unreleased notes including merged perf(fitstats): reuse NumPy fallback reduction buffers #570.
2. Verify python scripts/render_changelog_fragments.py --check CHANGELOG.md and pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py; run git diff --check.
3. Commit only the authoritative CHANGELOG.md render unless the renderer mechanically requires no other change. Do not change mmle.py, the test, doctoring, fragment, workflows, dependencies, lockfiles, versions, or performance claims.
4. Let complete exact-head CI/Security/SAST rerun on the replacement head. Keep Draft; do not mark Ready, approve, merge, enable auto-merge, or create helper workflows/artifacts.

The predecessor exact-head CI must not be rerun or counted after the head changes.

[seonghobae]

@opencode-agent address

Refetch PR #568 and write only if its exact Draft head is still e397f0d70d1469f1ab708d794544ca07ce235af2. The numerical change and independent missing-data parity/allocation tests are complete. Exact-head Rust/PyO3, package, GPU no-skip, fuzz, Security Scan, and SAST are green; Python has one deterministic repository failure only: authoritative CHANGELOG.md render parity. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then --check, the changelog parity/fragment tests, tests/test_mmle_fallback_eap_matmul.py, compile/import, and git diff --check. Preserve every protected-main Unreleased note including merged #570 and every historical release. Commit only renderer-produced CHANGELOG.md if it is the sole new diff. Do not touch numerical source/tests/fragment/doctoring/workflows/dependencies/lockfiles/versioning, create repair/patch/journal/source-snapshot artifacts, mark Ready, approve, merge, release, or alter protections. Abort without writing if the head moved; after any head change, predecessor checks/reviews are historical and complete exact-head gates must rerun.

[seonghobae]

@opencode-agent address

Use the exact-head repair instructions already recorded in comment 5218396624. Refetch the live head first and abort if it differs.

[seonghobae]

@opencode-agent address

Refetch exact current Draft head e397f0d70d1469f1ab708d794544ca07ce235af2; every predecessor-head repair request is stale. Current exact-head Rust/PyO3, package/release acceptance, explicit GPU no-skip, fuzz, Security Scan, and SAST are green. Python has one deterministic failure only after 2,916 passing tests / 2 skips: tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments. The intended diff remains the reviewed one-line posterior @ nodes projection plus its parity/source regression, APA 7 doctoring, and docs/changelog.d/mmle-fallback-eap-matmul.md.

Perform the single ordinary repository-owned repair now:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py

If and only if the exact head is unchanged, commit the resulting managed CHANGELOG.md synchronization directly on perf/mmle-eap-matmul-current-main. Preserve all protected-main Unreleased notes and the fragment verbatim. Do not create transport patch files, journals, temporary/source-generating workflows, or another PR; do not alter numerical code/tests/dependencies/version/protections/reviewer identities; do not mark Ready, approve, merge, or release. After the commit, discard all predecessor-head evidence and let the full replacement-head CI/Security/SAST/review gates rerun.

[seonghobae]

/oc

Operate only on exact Draft head e397f0d70d1469f1ab708d794544ca07ce235af2; abort without writing if it moved. The reviewed one-line posterior @ nodes projection, independent missing-data parity/source regression, APA-7 doctoring, and authoritative fragment are complete. Exact-head validation has one deterministic failure only: authoritative changelog parity. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then python scripts/render_changelog_fragments.py --check CHANGELOG.md, followed by pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_fallback_eap_matmul.py. Commit only the managed CHANGELOG.md synchronization if the exact head remained unchanged. Preserve docs/changelog.d/mmle-fallback-eap-matmul.md and all protected-main Unreleased material verbatim. Do not alter numerical code/tests/dependencies/workflows/version/protections, add patch/journal/workflow artifacts, mark Ready, approve, merge, or release. Any new commit invalidates predecessor-head evidence.

[seonghobae]

@opencode-agent address

Exact current Draft head e397f0d70d1469f1ab708d794544ca07ce235af2 has completed Security Scan and SAST successfully. CI's Rust, fuzz, explicit GPU-no-skip, package/release-acceptance jobs are green; Python ran 2,918 collected tests with 2,916 passing and 2 skipped, and the sole deterministic failure is tests/test_changelog_fragment_contract.py::test_repository_changelog_is_rendered_from_current_fragments because CHANGELOG.md is stale.

Make exactly the repository-prescribed release-record repair on the same branch: run python scripts/render_changelog_fragments.py --update CHANGELOG.md and python scripts/render_changelog_fragments.py --check CHANGELOG.md, inspect git diff --check, commit only the rendered CHANGELOG.md change required by the already committed EAP-matmul fragment, and do not alter production arithmetic, tests, dependencies, workflows, branch protection, versioning, or the fragment. Keep the PR Draft; all predecessor-head evidence is historical after the commit and fresh exact-head CI/reviews remain mandatory.

[seonghobae]

@jules Work only on exact Draft head e397f0d70d1469f1ab708d794544ca07ce235af2; abort without writing if the head moved. Exact-head Rust, package/release acceptance, explicit GPU-no-skip, fuzz, Security Scan, and SAST are green; Python had 2,916 passing tests and 2 skipped with one deterministic failure only: authoritative changelog render parity. Run python scripts/render_changelog_fragments.py --update CHANGELOG.md, then python scripts/render_changelog_fragments.py --check CHANGELOG.md, git diff --check, pytest -q tests/test_changelog_fragment_contract.py tests/test_mmle_vectorized_fallback.py plus the existing EAP projection parity/allocation regression for this branch. Commit only the generated CHANGELOG.md synchronization required by docs/changelog.d/mmle-fallback-eap-matmul.md. Preserve protected-main Unreleased material and the fragment verbatim. Do not change production arithmetic, tests, docs, dependencies, workflows, versioning, or branch protection. Keep Draft. Any new commit invalidates predecessor-head checks/reviews.

[seonghobae]

Correction on 2026-08-09: the earlier integration claim was invalid because it interpreted a reversed compare direction. With the exact live protected tip 4d910ed650f384ff882c8b5fba6a8b08fd532236 as base and this PR head e397f0d70d1469f1ab708d794544ca07ce235af2 as head, GitHub reports status=diverged, ahead_by=4, behind_by=3, with four unique files: python/fast_mlsirm/estimators/mmle.py, tests/test_mmle_fallback_eap_matmul.py, docs/doctoring/mmle-fallback-eap-matmul.md, and docs/changelog.d/mmle-fallback-eap-matmul.md. This head is not an ancestor of protected main and was not already integrated. The PR was reopened to correct that state; no check or review evidence is transferred.

[seonghobae]

Closing now as superseded by #574, not as integrated by ancestry. Exact replacement evidence was independently checked against #574 head 2da96031375d51400214be3c6cf9dd926d67d80d: both heads implement theta = posterior @ nodes in python/fast_mlsirm/estimators/mmle.py. #574's tests/test_mmle_eap_projection_contract.py preserves this PR's one-iteration partial-missingness comparison against the previous weighted-sum equation and pins the allocation path with an AST-level MatMult assertion; it additionally adds fail-closed quadrature bounds, a conservative 512 MiB fallback workspace guard, pre-conversion/pre-numpy.where allocation-order tests, and public fallback-routing coverage. #574 also carries the replacement doctoring and authoritative changelog fragment and has just rendered the conflict-free managed CHANGELOG.md.

The correctly directed live compare still shows this head has four unique commits relative to protected main. Those commits are intentionally not merged because their domain-equivalent behavior and stronger safety evidence are retained in the live replacement. No checks, reviews, approvals, or commit ancestry are transferred from #568 to #574.

[seonghobae]

@opencode-agent address

Reopened after corrected ancestry verification. Protected main 4d910ed650f384ff882c8b5fba6a8b08fd532236 vs head e397f0d70d1469f1ab708d794544ca07ce235af2 is diverged with ahead_by=4, and main still has theta = (posterior * nodes[None, :]).sum(axis=1) while the branch uniquely carries the tested posterior @ nodes EAP change. Main also lacks this branch's permanent test and changelog fragment.

Refetch exact head/main before acting. If unchanged, non-destructively reconcile current main, preserve only the reviewed EAP optimization/test/doctoring/fragment, run the authoritative changelog renderer/check, run focused EAP/changelog tests, and keep Draft. No force-push, scope expansion, new PR, merge, release, or predecessor-head evidence reuse.

[seonghobae]

Closing as superseded by the broader controlled replacement in #574, not as already integrated. Exact protected main is 4d910ed650f384ff882c8b5fba6a8b08fd532236; this branch head e397f0d70d1469f1ab708d794544ca07ce235af2 still carries four unique unmerged files, so no reversed ancestry claim is being made. Exact current #574 head cb564a60b8975d155be3d3534ed8ea6c9b69fb12 independently contains the same posterior @ nodes production change, reconstructs the prior weighted-sum result under partial missingness, pins the AST allocation contract, and adds stricter quadrature, workspace, dtype-conversion, response-grid, public-routing, and pre-coercion guards with APA doctoring. Maintaining two branches for the same production line would duplicate changelog repair, exact-head CI, review, and conflict work. #574 remains Draft/non-mergeable and must still be safely reconciled to protected main and fully revalidated; no checks, reviews, approvals, or merge evidence from #568 transfer.

[seonghobae]

@jules address

RCA is complete for exact head e397f0d70d1469f1ab708d794544ca07ce235af2: CI run 31305321273 has Rust, package, GPU-smoke and fuzz GREEN; Python has exactly one failing contract, test_repository_changelog_is_rendered_from_current_fragments. Security Scan and SAST are GREEN. Do not change the EAP numerical implementation or tests.

First re-read the branch head and current protected main. If another writer moved this branch, abort and report the new head. Otherwise merge current protected main normally (no rebase/force-push), resolve only the managed changelog using the repository renderer, then run:

python scripts/render_changelog_fragments.py --update CHANGELOG.md
python scripts/render_changelog_fragments.py --check CHANGELOG.md
python -m pytest -q tests/test_mmle_fallback_eap_matmul.py tests/test_changelog_fragment_contract.py

Commit the normal main merge plus rendered CHANGELOG.md only. Preserve the one-line posterior @ nodes change, parity/source-path tests, Rust production boundary, APA 7 doctoring, and all accepted-main changes. Keep Draft until complete exact-head CI/Security/SAST are GREEN; do not mark Ready, approve, merge, create another PR, or rewrite history.