Previous version searched against atomic_controls_dedup collection which
only contains Pass 0b atomic controls. Now creates a temporary collection
with ALL draft controls as reference, then checks targets against it.
Two phases:
1. Index ~53k reference drafts into temp Qdrant collection (batch 32)
2. Search each of 14k target controls, Embedding + LLM for borderline
3. Cleanup temp collection when done
Status updates every 50 controls (fixed counter bug).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
043bcb65d8