# rapidchat code

| file | what it does |
|---|---|
| `vc_bench.py` | builds the re-skinned airline world and the round-1 scenario families |
| `vc_bench_r2.py`, `vc_bench_r3.py`, `vc_bench_r3b.py` | round-2 and round-3 scenario families |
| `validate_vc_bench.py`, `validate_r2.py`, `validate_r3.py` | replay every scenario's gold actions with the real tau2 airline tools and re-derive each answer |
| `oracle_vc_bench.py`, `mutation_test.py` | sanity checks: an oracle agent must pass, mutated answers must fail |
| `vc_install.py` | registers the practice world as a tau2 domain (`vc_airline`) |
| `vc_sft.py` | turns passing tau2 conversations into chat-format training examples |
| `train_lora.py` | LoRA fine-tune (rank 32) with a chunked, checkpointed loss; resumable |
| `merge.py` | merges an adapter into the base weights |