tapchannel: support HTLC revocation sweeps #1994

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GeorgeTsagk wants to merge 12 commits into

lightninglabs:mainfrom

GeorgeTsagk:htlc-revocation

Commits on Jul 16, 2026

(wip) build: bump lnd
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tapchannel: add revocation sweep descriptors
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tapchannel+server: pass through NotifyBroadcast skip flag
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tapchannel: add revocation sweep descriptor sign+verify tests
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tapfeatures+tapchannelmsg: add DeterministicHTLCs feature bit and commitment caching
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tapchannel+server: implement HtlcSigHashType and thread DeterministicHTLCs flag
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tapchannel: sweep second-level revoked HTLC outputs
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tapchannel+server: use AuxNotifyOpts for NotifyBroadcast
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tapchannel: import and sweep second-level HTLCs for non-breach force close
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tapd-integrated: increase lndclient RPC timeout to 2 minutes
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itest: test second-level HTLC revocation and adapt assertions for DeterministicHTLCs
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tapchannel+server: adapt call sites to lnd revocation API
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