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Oleg Maslov
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# LOCKED — PM-RATIFY-VERTEX-BATCH-ELIGIBILITY Verdict, INFEASIBLE ACCEPT, Branch A CLOSED
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**Date**: 2026-04-24
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**Ratified by**: Marko Marković (via PM adjudication)
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**PM**: claude-opus-4-7 (Cowork)
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**Prerequisite gate**: §1.3e strict hold → §1.3f Branch A activation → Vertex AI Batch Prediction eligibility probe
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**Probe cost**: $0.02 (under $0.05 cap)
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## Odluka
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**INFEASIBLE ACCEPT** — `gemini-3.1-pro-preview` nije u Vertex AI Batch Prediction registry-ju, iako jeste u publisher catalog-u. Branch A (Vertex Batch rerouting za Gemini cell) **CLOSED permanently** dok Google ne promeni product posture za preview modele. §1.3e fallback matrix redukovana na jedan aktivni branch (B).
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## Evidence chain
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CC-1 probe (anchor `8ad0567`, 9-commit parent chain od v4 anchor-a `dedd698`) tri data points:
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1. **REST GET publisher catalog HTTP 200** — model postoji u opštem catalog-u.
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2. **SDK BatchPredictionJob.submit() 404** na oba naming forma (`gemini-3.1-pro-preview` i `publishers/google/models/gemini-3.1-pro-preview`). Error message: `The PublisherModel gemini-3.1-pro-preview does not exist.`
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3. **Control test: `gemini-2.5-flash` submit PENDING state** (job ID `7779966002640453632`) kroz identičnu SDK plumbing. Control pokazuje da plumbing radi; rejection je model-specific.
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Interpretacija: Vertex Batch maintain-uje separate registry od publisher catalog-a. Preview modeli su u potonjem, odsutni iz prvog. Error message je semantički misleading ("does not exist") ali operativno jasan: not batch-enabled.
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## Scope discipline
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CC-1 ispoštovao sve guards:
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- §11 frozen paths netaknuti (runner, judge-runner, failure-mode-judge, health-check, litellm-config.yaml)
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- Manifest v5 anchor `fc16925` intact, NO v6 emission
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- Ne Vertex adapter u benchmark execution path-u
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- Samo `benchmarks/probes/vertex-batch-eligibility/` + `.gitignore` + `.gitattributes` modifikovani (doc-infra additions za probe artefact pass-through + LF pin)
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- NO N=400 kick attempted
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- pip install `google-cloud-aiplatform google-cloud-storage` — pre-authorized one-off, versions logged u memo-u
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Artefakt SHAs LF-pinned:
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- script: `4c30d25e...`
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- input: `2c90f83b...`
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- log: `5ef76b46...`
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- memo: `f3c0a747...`
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- output: NOT CREATED (correct under INFEASIBLE)
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## Posledice za §1.3e fallback matrix
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Bila: tri branka (A — Vertex Batch; B — manifest v6 reduced; C — P8 multi-project).
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Sad: jedan aktivni branch (B).
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- **Branch A (Vertex Batch)**: CLOSED. Preview model ne eligible. Future: kada `gemini-3.1-pro-preview` promoted u GA, batch eligibility tipično sledi. Strategic signal za kalendar, ne immediate action.
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- **Branch B (Manifest v6 reduced Gemini coverage)**: STANDBY. Aktivacija samo ako Google quota ticket ne stigne do 2026-04-26 18:00 CET.
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- **Branch C (P8 multi-project)**: već odbačen pre §1.3f (audit/ToS rizik).
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## Matrix binary sada
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1. **Google approval ≤48h** → GATE-D-REKICK-GO sa pre-flight sequence (gcloud quota verify + probe v3 + N=400 kick). Manifest v5 path po planu.
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2. **Google ne-approval @ 48h checkpoint** → Branch B pivot = manifest v6 proposal brief (Gemini judge samo na primary hypothesis cells, ~800 calls umesto 2005; Opus+GPT duo nosi sekundarne cells; small κ re-validation $15-30).
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## Nus-produkt (permanent retention)
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gcloud SDK + ADC na CC-1 hostu ostaje operational za §1.3e GATE-D-REKICK-GO Step 1 (`gcloud alpha services quota list`). Python SDK-ovi (`google-cloud-aiplatform`, `google-cloud-storage`) ostaju za eventualne buduće Vertex potrebe. P-A1 investicija (~15 min) trajno korisna, ne propada sa Branch A retraction-om.
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GCS bucket `egzakta-vertex-batch-probe-2026-04` ostaje u projektu `gen-lang-client-0674908699`; trivial storage cost, Marko discretion da obriše posle 7 dana.
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## Parent commit chain
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```
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fc16925 v5 anchor (MD/YAML pre-registration)
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ad324cc Step 2 primary rpm:20 (gemini-3.1-pro alias)
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3a146ef §1.3c probe v2 PASS (30/30 HTTP 200)
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e5696f4 Fold-in 3.5a alias naming reconciliation
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d0ab680 Fold-in 3.5b sibling alias defensive mirror
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1d3851d §1.3e RPD feasibility memo
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8ad0567 §1.3f Vertex Batch eligibility probe INFEASIBLE
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```
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8 commits (tačno) od v4 anchor `dedd698`. HEAD intact. Zero N=400 calls executed.
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## Task #29 progress
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- §1.1 Path L-1 ✓
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- §1.2 Task 2.6 path ✓
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- §1.3 FAIL → §1.3b IN_SCOPE ✓
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- §1.3c PASS ✓
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- §1.3e RPD strict hold ✓
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- §1.3f Vertex Batch INFEASIBLE ✓ → Branch A CLOSED
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- **GATE-D-REKICK-GO blocked**: Google quota approval pending
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- **48h checkpoint**: 2026-04-26 18:00 CET → Branch B activation if no approval
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## CC-1 state
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HALTED. Awaiting either:
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(a) Marko ping "Google approval confirmed" → PM emituje GATE-D-REKICK-GO brief sa pre-flight sequence-om;
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(b) Marko ping "48h timeout" @ 2026-04-26 18:00 → PM emituje manifest v6 proposal brief za Branch B.
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## Odbacivanja
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- **Retry na different region** (npr. europe-west4 umesto us-central1): rejection je model-specific not region-specific; control test prošao u us-central1, isti plumbing radi.
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- **Workaround kroz batch-eligible substitute model** (Gemini 2.5 Pro batch): §5.2 consistency_constraint break + judge ensemble quality degradation. Odbačeno kao i P3 ranije.
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- **Retry za 24h**: Google batch registry promene sa GA promotion-om, ne na dnevnoj osnovi. Čekanje je bez merit-a.
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