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spec(ENG-UPSTREAM-OMNI-PIN): vLLM-Omni needs its OWN pin, and the inventory that says otherwise (#633) - #635

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spec(ENG-UPSTREAM-OMNI-PIN): vLLM-Omni needs its OWN pin, and the inventory that says otherwise (#633)#635
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Scopes #633.

Rewritten after #650 superseded the original design

This PR originally proposed an omni-parity-pin block inside
.agents/upstream-sync.md. While it was open, #650 landed the oracle
registry
— one file per oracle under .agents/oracles/, a fenced oracle-pin
block, scripts/check-oracle-pins.py enforcing it — which is a better answer to
the same problem and explicitly rejects the shared-surface shape the draft had.

So the spec was rewritten rather than patched, and says so at the top. Reviewing
the diff against the first version is the wrong frame; the current spec is the
proposal.

What this row no longer does

  • Propose a record format. The registry owns that.
  • Restate per-architecture gateability. AGENTS.md §"When vLLM has no
    implementation" and .agents/oracles/README.md already bind gateable = yes
    to "demonstrably builds and runs the model".
  • Touch .agents/oracles/vllm-omni.md at all. That file already reads
    pin = UNPINNED, gateable = no, evidence = #633, which is exactly true.
    Nothing to correct.

What survives, because the registry file cannot state it

  • The two pins may legitimately disagree. vllm-omni requires vLLM 0.27.0+;
    our parity pin is 555967922 (0.26.0.dev0). Forcing them equal means moving
    every gated row to suit a lane that touches none of them.
  • An omni-gated number is labeled with both commits and is never evidence about
    the core pin's surface
    — not in a parity claim, a binding grid, or a
    docs/BENCHMARKS.md row owned by a core-pinned row.
  • An omni pin advance does not re-open the vLLM-side binding grids, provided
    the omni oracle is isolated in its own virtualenv and touches neither
    ${VLLM_SOURCE} nor the environment the parity pin measures itself from. Fail
    a condition and the denominator's own dependency tree moved, so it is
    re-validated as a core sync cycle.

upstream-sync.md now points at the registry and carries only those rules.

Deliberate non-change

core_commit_used is not added to the oracle-pin schema here. The pin is
UNPINNED, so there is no value to record, and extending a checker-enforced
schema for a value that does not exist is speculation. It lands with the
measurement as W4, with its own mutation evidence.

Mutation evidence

check-pr-size.py requires it for the check-agent-record.py count change, and
it is load-bearing: test_omni_pin_row_is_inside_the_engine_ratchet is RED-first
against the exact bad merge this branch hit — main bumped ENGINE_ROWS
152 -> 153 for SERVE-RECIPE-ARGS while this branch bumped it 152 -> 153 for its
own row, so both sides read 153 and the merge looked clean. Drop the row, rewind
the constant and the rollup so every count agrees, and the suite reports 53 tests
with ONE failure: that test. Merged value is 154; keeping either 153 would
have dropped a real row while leaving the matrix internally consistent.

Gates

agent-preflight.sh green except test_cpu_x86_llamacpp_floor, which exits 4
(NO_QUIET_WINDOW) at load 74-127 while another session builds LTX-2.5 on the
same box. It never measured anything, so it is not a verdict on this change; the
base-SHA comparison on an unmodified origin/main tree is noted in the thread.

Follow-up

#634 / #637 (IndexTTS-2.5) is
stacked on this row. MiniMax-H3 W3+ and LTX-2.5 carry the same blocker.

Adversary added 3 commits August 13, 2026 14:29
…entory that says otherwise (#633)

FOLLOWING_AGENTS_PROTOCOL

The pin protocol covers one repository. Every architecture living only in
`vllm-project/vllm-omni` therefore has no oracle this protocol can NAME — not a
hard comparison, an unavailable one. Two rows already carry it as their blocker:
`minimax-h3.md:205-208` ("a vllm-omni pin is a prerequisite for W3+") and the H3
row in `model-matrix.md`, which closes with "OPEN: there is no vllm-omni parity
PIN". #435 (LTX-2.5) is the third.

The surface is ~40 modules wide, not three rows: the whole TTS family (IndexTTS2,
Fish Speech, GLM-TTS, Ming-TTS, MOSS-TTS, Qwen3-TTS, VoxCPM2, Voxtral-TTS, Higgs
Audio v2/v3, Step Audio2, CosyVoice3, OmniVoice) plus Qwen2.5/3-Omni, Aura-Omni,
Ming-Flash-Omni and Hunyuan Image3/Video. So this is also a RECORDS defect:
`model-matrix.md` claims an EXHAUSTIVE architecture inventory of 329 rows, and
that claim is scoped to one repository without saying so.

Design, in the spec: a SECOND pin block rather than a second value of the first.
vllm-omni requires vLLM 0.27.0+ against our 0.26.0.dev0 core pin, so the two are
allowed to disagree, and `vllm_core_commit_used` records which core commit the
omni oracle actually ran against. Two rules follow — an omni-gated number is
labeled with BOTH commits, and is never evidence about the core pin's surface.
Gateability stays per ARCHITECTURE: the oracle must build, run and EMIT OUTPUT
for that model, because `assert_oracle_commit` exists precisely because an oracle
once resolved and was a rollback.

The spec answers the question it would otherwise leave to be discovered: an omni
pin advance does NOT re-open the vLLM-side binding grids, conditional on
isolation (own virtualenv, no core-pinned row citing an omni number, no mutation
of ${VLLM_SOURCE} or the environment the core pin measures itself from). Fail any
condition and the denominator's own dependency tree moved, so it is re-validated
as a core sync cycle.

W1-W2 (the `upstream-sync.md` block schema, concept and rules) land here. W3-W5
are owed and unclaimed: the checker with its five RED-first assertions, the
measured pin values, and a per-architecture gateability demonstration. The pin
values are deliberately NOT invented here — they need an eligible host, and an
unavailable value stays PENDING rather than becoming an assumption.

`ENGINE_ROWS` 152 -> 153 for a genuinely new protocol row, never to make a
failing transition pass. Gates: `agent-preflight.sh` and `--staged` both green.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
FOLLOWING_AGENTS_PROTOCOL

Two keyed-record conflicts, both resolved by taking the target branch version
WHOLESALE and reapplying the scoped edit, per AGENTS.md §Records.

`main` had independently bumped `ENGINE_ROWS` 152 -> 153 for `SERVE-RECIPE-ARGS`
while this branch bumped the same constant 152 -> 153 for `ENG-UPSTREAM-OMNI-PIN`.
Both rows are real and neither replaces the other, so the merged value is 154 —
taking either side's 153 would have silently dropped one row while leaving the
matrix looking consistent. The `Serving, API, CLI, library` rollup is merged the
same way: 32 -> 34 rows, main's +1 ACTIVE and this branch's +1 READY both kept.

Unrelated keys verified byte-for-byte: the whole engine-matrix diff against
origin/main is this row plus those two rollup cells, and the roadmap issue table
carries no duplicate issue key after its automerge.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
…top overclaiming the inventory gap (#633)

FOLLOWING_AGENTS_PROTOCOL

Two corrections found while writing the IndexTTS-2.5 row against this spec.

The spec cited `a4ea67a2` as the one source audit of vllm-omni. `main` has since
landed a second, newer one: #609/#610 anchor their omni rows to
`bbe6ccc512a404a2df8c977ea29003002f2683e8`. Both are now cited, with the point
that neither is a pin — a source read establishes what EXISTS, never what RUNS,
which is the whole distinction this row turns on.

The spec also said the omni surface is "uninventoried and uncounted". That was
true when written and is no longer: those same PRs rowed several omni
architectures explicitly as out-of-repo. The residual defect is narrower and the
text now says the narrower thing — the document's scope sentence still does not
state the boundary those rows work around, and each of them repeats the same
missing-pin blocker in its evidence cell.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
Adversary and others added 3 commits August 13, 2026 15:37
…d-bearing (#633)

FOLLOWING_AGENTS_PROTOCOL

`check-pr-size.py` correctly refused the branch: a change to
`scripts/check-agent-record.py` owes semantic mutation evidence in
`tests/scripts/test_agent_record.py`, and the count bump had none.

The new assertion names BOTH rows the constant now covers, which matters more
here than in the #117 and #606 precedents it copies, because this bump COLLIDED.
`main` took the constant 152 -> 153 for `SERVE-RECIPE-ARGS` while this branch
took the same 152 -> 153 for `ENG-UPSTREAM-OMNI-PIN`, so both sides read 153 and
the merge looked clean. Keeping either 153 would have dropped a real row while
leaving the matrix internally consistent.

RED-first, against exactly that bad merge: drop the omni-pin row, rewind
`ENGINE_ROWS` to 153 and rewind the serving rollup, so every count agrees with
every other count. The full suite then reports 53 tests with ONE failure, and it
is this test — nothing else in the record can see a row that vanished into a
matching number. Scratch copy restored byte-for-byte, verified by comparison.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
…nded (#633)

FOLLOWING_AGENTS_PROTOCOL

#650 landed the oracle registry while this row was open, and it is a better
answer to this row's problem than the one this spec proposed. The first draft put
an `omni-parity-pin` block inside `upstream-sync.md`; the registry puts one file
per oracle under `.agents/oracles/`, read by glob, and explicitly rejects the
shared-surface shape the draft had. So the spec is rewritten rather than patched,
and says at the top that it was superseded.

What this row no longer does: propose a record format, restate per-architecture
gateability (AGENTS.md and `oracles/README.md` already bind it), or touch
`.agents/oracles/vllm-omni.md` at all — that file already reads `pin = UNPINNED`,
`gateable = no`, `evidence = #633`, which is exactly true.

What survives is what the registry file cannot state on its own: the two pins may
legitimately DISAGREE (vllm-omni requires vLLM 0.27.0+ against our 0.26.0.dev0
parity pin), an omni-gated number is therefore labeled with BOTH commits and is
never evidence about the core pin's surface, and an omni pin advance does not
re-open the vLLM-side binding grids provided the omni oracle is isolated in its
own virtualenv. `upstream-sync.md` now points at the registry and carries only
those rules.

`core_commit_used` is deliberately NOT added to the `oracle-pin` schema here. The
pin is UNPINNED, so there is no value to record, and extending a checker-enforced
schema for a value that does not exist is speculation. It lands with the
measurement as W4, with its own mutation evidence.

Merge resolution: main had moved `PARTIAL` 16 -> 17 and `INVENTORIED` 39 -> 38;
this branch's one READY row is reapplied on top of those numbers rather than
either side being taken whole.

Gates: preflight green except `test_cpu_x86_llamacpp_floor`, which exits 4
(NO_QUIET_WINDOW) at load 74-103 while another session builds LTX-2.5 on this
box. It never measured anything; base-SHA comparison recorded on the PR.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
FOLLOWING_AGENTS_PROTOCOL

Fourth time main has moved under this branch today. This one merged CLEAN with no
conflicts, and every record gate was re-run afterwards rather than inferred from
the absence of conflict markers: check-agent-record, check-model-checklist,
check-oracle-pins, check-doc-checkpoint, check-public-doc-tables and the 54-case
record suite are all green on the merged tree.

That distinction matters here: a clean automatic merge of a keyed record is the
failure mode this protocol refuses, not evidence of correctness. The earlier
model-matrix merge on the sibling branch merged clean too and produced a file
with two Total rows.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
@localai-bot
localai-bot merged commit 782264c into main Aug 13, 2026
13 of 16 checks passed
localai-bot pushed a commit that referenced this pull request Aug 13, 2026
FOLLOWING_AGENTS_PROTOCOL

#635 landed as squash `782264c0c`, so the pin content this branch carried as its
own commits arrives on main as a DIFFERENT commit. That produced an add/add
conflict on `specs/upstream-omni-pin.md` plus content conflicts on
`upstream-sync.md` and the roadmap issue table.

Resolved by taking MAIN's version for everything the pin PR owned — the squash is
the merged truth for those files, and keeping this branch's pre-squash copies
would resurrect a superseded draft — then reapplying only this row's own scoped
edit, the #634 issue-table entry.

Verified on the merged tree rather than inferred: check-agent-record,
check-model-checklist, check-oracle-pins, check-doc-checkpoint,
check-public-doc-tables, check-now-current and the 54-case record suite all green,
with `ENGINE_ROWS = 154` (from the merged pin row) and MODEL = 372 (this row's
two architectures) both intact.

Following-Agents-Protocol: true
AI-Assisted: true
Assisted-by: AGENT:claude-opus-5 [Claude Code]
@localai-bot
localai-bot deleted the row/ENG-UPSTREAM-OMNI-PIN branch August 13, 2026 21:14
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