tree: add asset-aware materialization context - #1176
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This was referenced Aug 21, 2026
darioAnongba
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Aug 24, 2026
Asset-bearing tree nodes use distinct taproot tweaks and carry units independently from carrier satoshis. Store this data in an outpoint-keyed context so extracted paths sign deterministically without changing Bitcoin-only trees. Keep per-node tweak selection inside Tree signing and retain the existing public signer API. Copy MuSig2 participant slices before aggregation because the local signer may sort caller-owned state.
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Summary
Runtime isolation
This branch adds no asset runtime entry point. Bitcoin-only leaves keep
AssetAmountat zero,BuildStructurereturns a nilAssetContext, and public signer calls continue to use the tree-wide sweep tweak.