[RFC] Add BOLT 12 payer proof primitives#4297

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vincenzopalazzo wants to merge 3 commits intolightningdevkit:mainfrom

vincenzopalazzo:macros/proof-of-payment-bolt12-spec

Commits on Feb 24, 2026

Extract payer key derivation helpers for reuse

vincenzopalazzo
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claude
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Add BOLT 12 payer proof implementation

vincenzopalazzo
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claude
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Reduce allocations in payer proof merkle operations

vincenzopalazzo
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claude
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