method name
raw call arguments
Builds a deterministic call key used for snapshot lookup.
Format: prefix + method + ':' + stableHash(normalizedArgs).
Args are normalized before hashing: ref-registered values become @refId,
the execution-context transaction option is dropped, and runtime-generated
Date values (timestamps) are replaced by a constant marker, so the same
logical call hashes identically across record and replay runs.
key prefix (empty for direct methods,
call:{refId}:for connection-scoped calls)