tags: restore challenge tags icml2026-repro, paper-xPdpfcJ65T (wiped by logbook sync)

Update logbook: Repro - A theory of learning data statistics in diffusion models, from easy to hard

Update logbook: Repro - A theory of learning data statistics in diffusion models, from easy to hard

Update logbook: Repro - A theory of learning data statistics in diffusion models, from easy to hard

Update logbook: Repro - A theory of learning data statistics in diffusion models, from easy to hard

initial commit