fix(psbt): detect taproot keypaths for network and output ownership#80
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Taproot key origins live in the separate taproot_leaf_paths map, not the segwit keypaths map. psbt_detect_network and psbt_classify_output only read the latter, so testnet taproot PSBTs were misread as mainnet and taproot change/self-transfer outputs were classified as spends.
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Taproot key origins live in the separate taproot_leaf_paths map, not the segwit keypaths map. psbt_detect_network and psbt_classify_output only read the latter, so testnet taproot PSBTs were misread as mainnet and taproot change/self-transfer outputs were classified as spends.