Constant ASR_DECODE_POLICY 

pub const ASR_DECODE_POLICY: &str = "-l en -t 1 -p 1 -bo 1 -bs 1 -nf -tp 0 -tpi 0 -nfa -mc 0";

The pinned decode policy, serialized exactly as the engine child receives it: one line, single spaces, no trailing newline. The engine argv embeds these tokens verbatim between the input selection and the output selection, and the rules pin this serialization’s BLAKE3 under the asr-decode-policy role, so the rules, the code, and the child invocation cannot drift apart.