feat: cosmos sdk 53 update#177

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NeverHappened wants to merge 4 commits intomainfrom

feat/cosmos-sdk-53

Commits on Dec 1, 2025

update meutron-std
NeverHappened
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Commits on Jan 12, 2026

update toolchain to 1.86
NeverHappened
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Commits on Jan 14, 2026