BEAST3 gold standard migration#3

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alexeid wants to merge 4 commits intomasterfrom

Commits on Mar 20, 2026

Migrate bdtree to Maven build targeting BEAST3
alexeid
committed

Commits on Mar 30, 2026

Restructure as flat single-module, migrate to beast3 spec types

alexeid
and
claude
committed
Update example XMLs to beast3 spec types, move Shankarappa to legacy

alexeid
and
claude
committed

Commits on Apr 1, 2026

Gold standard migration: add CI, release script, license, migrate FXTemplate
alexeid
committed