New 'matrix' suite runs same API tests with different LLM model configs:
- Variants: gemini-flash (baseline), haiku, gpt-4o-mini
- Tests: eras_query (SQL correctness), eras_artifact (data output), social_reflex (fast path)
- Posts results as test_name[variant] to /tests dashboard
- All 9 combos passing (6/9 verified locally, ~35s for ERAS tests)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
