JSON error responses: `{"error": "..."}` with an explicit status.

Simple byte-level tokenizer for testing. Tokens 0-255 are raw bytes, 256+ are special tokens.

Mock model that returns uniform logits over the vocab. This ensures that with temperature > 0, different samples should (with very high p

Combined optimizer: Muon for 2D matrix params, AdamW for others. AdamW - Fused AdamW optimizer step. Muon - MomentUm Orthogonalized by

Useful if we wish to not use wandb but have all the same signatures

Minimal stand-in for a HuggingFace datasets Dataset: wraps a pyarrow Table and offers lazy row access and a seeded shuffle.

KV Cache designed for Flash Attention 3's flash_attn_with_kvcache API. Key differences from FA2-style cache: - Tensors are (B, T, H, D)

nn.Linear that casts weights to match input dtype in forward. Replaces autocast: master weights stay fp32 for optimizer precision, but matmuls

For SFT Training it becomes useful to train on a mixture of datasets. Fun trick: if you wish to oversample any task, just pass it in multiple

A trivial task: example i is just {'i': i, 'tag': tag}.

smol-smoltalk dataset. train is 460K rows, test is 24K rows.

Custom formatter that adds colors to log messages.

Result of executing Python code in a sandbox.

Minimal config matching torchao's API. Only tensorwise recipe is supported.

Minimal config for Engine tests.

The `orx up` opencode host: one serve child per chat session, keyed by the orx session id, each running in that session's worktree. Share as `Arc<Agen

One embedded skill package: its public metadata, complete `SKILL.md`, and optional lazily loaded resources.

One file bundled inside a skill package, relative to the skill directory.

Memoized transcript: composer keystrokes re-render ChatPanel (draft state * lives there), and this boundary keeps them from re-allocating N Message

Owns turn tasks and the chat event stream. One per `orx up` process.

A live connection to one session's resident `claude` child.

The `orx up` Claude host: one resident `claude` child per chat session, keyed by the orx session id. Share as `Arc<ClaudeHost>` in axum state.