PrepareForSerialization

Prepares a UPLC term for flat serialization by replacing BLS12-381 constants that cannot be directly flat-encoded with equivalent runtime expressions.

Standalone BLS constants become uncompress(compressed_bytes):

• Const(BLS12_381_G1_Element(v)) → Apply(Builtin(Bls12_381_G1_uncompress), Const(ByteString(compress(v))))

List constants containing BLS elements are unrolled into MkCons chains:

• Const(List(G1, [v1, v2])) → MkCons(uncompress(compress(v1)), MkCons(uncompress(compress(v2)), Const(List(G1, [])))) The empty List[G1Element] at the end is flat-serializable because the stub Flat instance for BLS types is never invoked for empty lists.

Applied automatically before flat encoding in DeBruijnedProgram.flatEncoded.