feat: Gibbs variable selection + single-chain default for MCMC#74

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eprifti merged 2 commits intomainfrom

feat/mcmc-gibbs

Mar 25, 2026

Commits on Mar 25, 2026

feat: add Gibbs variable selection for MCMC (joint feature+coef sampling)
eprifti
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fix: default MCMC to 1 chain (Vadim's recommendation), add n_chains param
eprifti
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