fix: register legacy IBC gov proposal content types in atomone gov fork (backport)#359
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The v4 mainnet upgrade failed during the gov proposal migration with: failed to migrate gov proposals: failed to get proposal value: no concrete type registered for type URL /ibc.core.client.v1.ClientUpdateProposal against interface *v1beta1.Content The AtomOne gov module fork defines its own Content interface (atomone.gov.v1beta1.Content), and MsgExecLegacyContent unpacks its content Any against it. ibc-go registers ClientUpdateProposal and UpgradeProposal against the SDK's gov Content interface, but not against ours, so a historical mainnet proposal (#20) wrapping a ClientUpdateProposal failed to unpack during migration. Register both legacy IBC 02-client proposal content types against the AtomOne Content interface, matching the existing manual registration of the params and upgrade proposal content types. An audit of all 20 atomone-1 mainnet proposals confirms ClientUpdateProposal is the only missing registration; UpgradeProposal is registered defensively as it travels with it in ibc-go.
giunatale
approved these changes
Jul 22, 2026
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Backport #356
Also add v4.0.1 checksum to RELEASES.md