QVAC-18487 feat[mod]: sync sdk model registry to bergamot base-memory and drop deprecated marian opus

[opaninakuffo]

Note: be concise and prefer bullet points.

🎯 What problem does this PR solve?

• packages/sdk/models/registry/models.ts pinned BERGAMOT_EN_IT and BERGAMOT_ES_EN to the buggy tiny Bergamot variant at bergamot-{enit,esen}/2025-12-18/. Caused leading "- " hallucinations on short inputs and en→it quality regression (~3 pp chrF++ drop on [Bergamot] [CPU], ~33 pp on [Pivot es→en→it] [CPU]).
• 32 Marian Opus NMT entries deprecated in QVAC-14576 chore: remove Opus model entries from registry server #1680 still lived in the SDK registry.

📝 How does it solve it?

• Ran bun update-models against the staging registry, which now serves the base-memory Bergamot bytes (seeded by QVAC-17892 fix[ci]: use refreshed base-memory bergamot models for desktop integration tests #1785, synced to DHT 2026-05-05).
• Picks up the auto-deprecation of the old 2025-12-18/ Bergamot entries and the 32 Marian Opus entries from QVAC-14576 chore: remove Opus model entries from registry server #1680.
• File is auto-generated; no hand edits.

🧪 How was it tested?

• bun update-models --check from packages/sdk reports clean ("Models are up to date") after the regen.
• BERGAMOT_EN_IT and BERGAMOT_ES_EN expectedSize flipped 17.1MB → 30.1MB, confirming the tiny → base-memory switch.
• Path-bumped entries point at bergamot-{enit,esen}/2026-04-28/... (matches models.prod.json post-QVAC-17892 fix[ci]: use refreshed base-memory bergamot models for desktop integration tests #1785).

📦 Models

Removed models

NMT_Q0F16
NMT_Q0F16_1
NMT_Q0F16_2
NMT_Q0F16_3
NMT_Q0F16_4
NMT_Q0F16_5
NMT_Q0F16_6
NMT_Q0F16_7
NMT_Q0F16_8
NMT_Q0F16_9
NMT_Q4_0
NMT_Q4_0_1
NMT_Q4_0_2
NMT_Q4_0_3
NMT_Q4_0_4
NMT_Q4_0_5
NMT_Q4_0_6
NMT_Q4_0_7
NMT_Q4_0_8
NMT_Q4_0_9
NMT_Q4_0_10
NMT_Q4_0_11
NMT_Q4_0_12
NMT_Q4_0_13
NMT_Q4_0_14
NMT_Q4_0_15
NMT_Q4_0_16
NMT_Q4_0_17
NMT_Q4_0_18
NMT_Q4_0_19
NMT_Q4_0_20
NMT_Q4_0_21

[github-actions]

QVAC E2E — ios — ❌ failed

Totals: 57/89 passed · 24 failed · 70.4% · 1750s
Config: suite=smoke · filter=(none) · exclude=(none)
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Results by section

• addon-logging: 0/2 ❌
• config: 0/1 ❌
• config-reload: 1/2 ❌
• delegated-inference: 0/4 ❌
• diffusion: 0/2 ❌
• download: 0/1 ❌
• finetune: 0/1 ❌
• lifecycle: 0/2 ❌
• model: 6/8 ❌
• registry: 0/4 ❌
• vision: 0/3 ❌
• wrong-model: 0/1 ❌

Failed tests

• addon-logging-llm: Consumer died before test could be executed
• addon-logging-during-inference: Consumer died before test could be executed
• config-reload-then-transcribe: Consumer became unresponsive (no heartbeat for 123s)
• config-registry-download-smoke: Consumer died before test could be executed
• delegated-provider-start: Consumer died before test could be executed
• delegated-provider-stop: Consumer died before test could be executed
• delegated-load-model-fallback-local: Consumer died before test could be executed
• delegated-connection-failure: Consumer died before test could be executed
• diffusion-basic-txt2img: Consumer died before test could be executed
• diffusion-streaming-progress: Consumer died before test could be executed
• download-cancel-isolation: Consumer died before test could be executed
• finetune-start-complete: Consumer died before test could be executed
• lifecycle-suspend-resume-inference: Consumer died before test could be executed
• lifecycle-state-transitions: Consumer died before test could be executed
• model-load-inferred-type: Consumer died before test could be executed
• model-load-missing-type-string-src: Consumer died before test could be executed
• registry-list-returns-models: Consumer died before test could be executed
• registry-search-by-engine-llm: Consumer died before test could be executed
• registry-get-model-valid: Consumer died before test could be executed
• registry-get-model-not-found: Consumer died before test could be executed
• vision-basic: Consumer died before test could be executed
• vision-streaming: Consumer died before test could be executed
• vision-error-missing-image: Consumer died before test could be executed
• wrong-model-transcribe-on-llm: Consumer died before test could be executed

[github-actions]

QVAC E2E — android — ✅ all tests passed (83/89, 1949s)

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[github-actions]

QVAC E2E — windows — ⚠️ no results

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The test job did not produce a results artifact. Check the run for job-level failures.

[github-actions]

QVAC E2E — linux — ✅ all tests passed (89/89, 469s)

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[github-actions]

QVAC E2E — macos — ✅ all tests passed (89/89, 338s)

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[opaninakuffo]

review

[github-actions]

Tier-based Approval Status

**PR Tier:** TIER1

**Current Status:** ✅ APPROVED

**Requirements:**
- 1 Team Member approval ✅ (1/1)
- 1 Team Lead OR Management approval ✅ (1/1)



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*This comment is automatically updated when reviews change.*

[opaninakuffo]

review