| # king-2 — Throughput (numba) | |
| **Lever:** faster generation → fewer `deadline_hit`s → more trained tokens under the wall → often better final score. | |
| **Code base:** goethe-style Numba-accelerated generator (numpy + numba; numba is allowlisted). | |
| **Key ideas:** | |
| - JIT AR / chaotic / seasonal / hold-run kernels | |
| - Prefetch chunk producer (`_CHUNK=2048`) | |
| - Fixed-length emit fast path | |
| - Calendar `seasonal_focus`, heteroskedastic noise, AR2/integrated seasonal overlays | |
| **Score with:** | |
| ```bash | |
| cascade verify ./king-2 --chain-toml chain.toml | |
| cascade score ./king-2 --pool-dir ./my-heldout --device cuda --train-hours 0.5 --n-windows 256 | |
| ``` | |