Bump leanSpec f12000b, strip production JSON derives#105

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ArtiomTr merged 3 commits into

grandinetech:devnet-4from

bomanaps:bumb/devnet4Test

Jun 17, 2026

Commits on Jun 5, 2026

Commits on Jun 16, 2026

address PR review: drop serde_helpers, struct-level rename_all on TestValidator
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