1 - solve_rate collapsed to 3 tiers.(0.40, 0.65).1export ROUTER_EMBEDDING_ARTIFACT_REPO=micdn/llm-router-goose-3tier
2export ROUTER_EMBEDDING_BUNDLE=~/.goose/complexity_model_3tier
3export ROUTER_EMBEDDING_LADDER="gpt-oss-20b-high,claude-sonnet-4-6-high,claude-opus-4-6-high"
4export ROUTER_EMBEDDING_BANDS="0.40,0.65"eval_report.md for held-out metrics.