chore: Accumulated backports to v4-next#21654

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AztecBot wants to merge 13 commits intov4-nextfrom

backport-to-v4-next-staging

Commits on Mar 17, 2026

feat: entrypoint replay protection (#21649)

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aztec-bot
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feat: guard BoundedVec oracle returns against dirty trailing storage (#21589)

benesjan
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aztec-bot
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fix: add bounds when allocating arrays in deserialization (#21622)

PhilWindle
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aztec-bot
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feat: implement manual Packable for structs with sub-Field members (#21576)

benesjan
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aztec-bot
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fix(aztec-node): throw on existing nullifier in getLowNullifierMembershipWitness (#21472)

PhilWindle
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aztec-bot
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fix: use trait dispatch for array Packable::unpack in card_game_contract (#21683)
AztecBot
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fix(p2p): penalize peers for errors during response reading (#21680)

mralj
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aztec-bot
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fix: update nullifier non-inclusion test expectations after early oracle throw (backport #21600) (#21615)
AztecBot
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fix(aztec-nr): fix OOB index with nonzero offset (#21613)

nchamo
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aztec-bot
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fix(builder): persist contractsDB across blocks within a checkpoint (#21520)

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aztec-bot
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Commits on Mar 18, 2026

fix(stdlib): accept null return_type for void Noir functions (#21647)

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aztec-bot
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feat: gas estimations on send (#21646)

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aztec-bot
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fix(validator): process block proposals from own validator keys in HA setups (backport #21603) (#21659)

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