Prompt fixtures

chat_template.jinja is copied unchanged from the checkpoint. references.json contains 20 contexts, expected text or errors, token IDs, input hashes, and generator versions.

References were generated with Transformers 4.57.6, Jinja2 3.1.6, and tokenizers 0.22.2. To regenerate:

1. Use the recorded checkpoint and versions.
2. Render each saved context with Transformers’ _compile_jinja_template.
3. Check nonempty successful cases with AutoTokenizer.apply_chat_template, using both tokenize=False and tokenize=True.
4. Replace the expected text, token IDs, or error. Use add_special_tokens=False for tokenization. Do not use Cherenkov to generate reference outputs.

Empty-message cases call the template directly because the Transformers wrapper indexes the first message before rendering.

Cargo tests need no Python. Text and error checks always run. Token checks require CHERENKOV_MODEL_DIR with the matching tokenizer; weights and GPU are not needed. Hash checks reject stale inputs.