Tests: Run, RegisterService, ServiceFor, MustServiceFor _Bad/_Ugly variants. Fix: Lock map is now per-Core instance, not package-level global. This prevents deadlocks when multiple Core instances exist (e.g. tests). Coverage: 82.4% → 83.6% Co-Authored-By: Virgil <virgil@lethean.io>
Move source from go/core/ to root, tests from go/tests/ to tests/. Module path dappco.re/go/core resolves cleanly — builds and tests pass. Co-Authored-By: Virgil <virgil@lethean.io>