# AIN-506 Semantic Review Progressive Live 500 Checkpoint

Status: `pass`
Created: `2026-06-12T15:02:50Z`

## What Happened

AINA embedded the first live `semantic_review` slice through Vertex Gemini Embedding 2 with repaired rows excluded. The live semantic run wrote 500 new semantic-review vectors with zero provider failures, then a bounded top-worked recovery run restored the top-1,000/top-500 vector coverage that a scoped snapshot bug had temporarily reduced.

## Metrics

- Semantic-review vectors now present: `500`
- Total Gemini vectors now present: `6034`
- Top-worked vectors after recovery: `1000`
- Spot-check sample/pass: `50/50`
- Hard posting noise in spot check: `0`
- Latest top-1,000/top-500 counts: `1000` / `500`
- Latest cosine gap: `0.207005`

## Position

This is a production data-engine milestone, not a public runtime promotion. Runtime authority remains false until AIN-510 retrieval comparisons pass across title-to-workflow, title-to-curriculum, title-to-evaluator, and sensitive mismatch cases.

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Ali Mehdi Mukadam - co-authored with Codex