Record checksums pre and post data sync#805

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jayjaybunce wants to merge 3 commits intodevelopfrom

Commits on Feb 20, 2025

Adds validation checksum management and model
Janson Bunce
committed

Commits on Feb 25, 2025

Merge develop/resolve conflicts
Janson Bunce
committed

Commits on Feb 28, 2025

Update validation to use UTC
Janson Bunce
committed