OpenRouter Qwen3-Embedding-8B pilot backfill completed

Result

• Real OpenRouter API call verified for qwen/qwen3-embedding-8b.
• Pilot backfill completed through scripts/backfill_vectors.py --provider openrouter --model qwen/qwen3-embedding-8b --dim 4096 --limit 100 --quiet.
• Current Qwen3 shadow-vector count: 101 docs, 1878 chunks.
• Dimension check: min 4096, max 4096.
• Sample vector_search_documents call returned top-3 rows.

Notes

• OpenRouter key was loaded transiently from existing local env files and was not printed or committed.
• Runtime audit file data/action_lifecycle_audit.jsonl remains the only dirty git file and is unrelated.
• Next engineering improvement: add skip-existing and chunk-limit controls to backfill script before larger full backfills.