feat(contribs): add gnoupgrade chain upgrade testing toolkit#5369
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Add a new contribs tool for testing and verifying gno.land chain upgrades. The toolkit provides three subcommands: - replay: starts a node against existing chain data to verify the new binary can successfully replay all committed blocks (smoke test) - statediff: captures chain state in a canonical, sorted JSON format for before/after comparison across upgrades - healthcheck: runs connectivity, block production, and ABCI query checks against a running node post-upgrade This is the first step toward a CI pipeline for chain upgrade confidence (Tools 1-3 from the chain-upgrade task plan). Generated with [Claude Code](https://claude.ai/code) via [Happy](https://happy.engineering) Co-Authored-By: Claude <noreply@anthropic.com> Co-Authored-By: Happy <yesreply@happy.engineering>
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This was referenced Apr 9, 2026
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Summary
Adds
gnoupgrade, a CLI toolkit for safe chain upgrade testing and verification.Subcommands
replay— Smoke test: verify new binary can replay all blocks from existing data dir without panicstatediff— Capture chain state (chain ID, height, app hash, realm/package listing) in canonical JSON formathealthcheck— Post-upgrade verification: connectivity, block production, ABCI queriesUsage
Part of the chain upgrade tooling for gnoland1 → gnoland-1.