fixup! feat(offers): add BOLT 12 payer proof primitives

Co-Authored-By: OpenAI Codex <noreply@openai.com>

Author: vincenzopalazzo

lightning/src/offers/payer_proof.rs

@@ -713,13 +713,9 @@ impl DisclosedFields {
 }
 
 // Payer proofs use manual TLV parsing rather than `ParsedMessage` / `tlv_stream!`
-// because of their hybrid structure: a dynamic, variable set of included invoice
-// TLV records (types 0-239, preserved as raw bytes for merkle reconstruction) plus
-// payer-proof-specific TLVs (types 240-250) with non-standard encodings such as
-// BigSize lists (`omitted_tlvs`) and concatenated 32-byte hashes
-// (`missing_hashes`, `leaf_hashes`). The `tlv_stream!` macro assumes a fixed set
-// of known fields with standard `Readable`/`Writeable` encodings, so it cannot
-// express the passthrough-or-parse logic required here.
+// because `reconstruct_merkle_root` needs the original bytes of the selectively
+// disclosed invoice records. The standard helpers parse typed fields, but they
+// do not preserve the passthrough record bytes needed for merkle reconstruction.
 impl TryFrom<Vec<u8>> for PayerProof {
 	type Error = Bolt12ParseError;