The conversation to render around. Row ids are assumed independent of it
(the assistant turn opens with a special token, and special tokens break
BPE merges) — the same assumption stableLenFor's memoized primer length
already makes, which is why callers may cache rows per (mode, tools).
The conversation to render around. Row ids are assumed independent of it (the assistant turn opens with a special token, and special tokens break BPE merges) — the same assumption stableLenFor's memoized primer length already makes, which is why callers may cache rows per (mode, tools).