What the resolver protects

This package delegates merge semantics to core foldkit-mixins; it does not simply concatenate arrays.

The resolver guarantees that:

• component/base attributes survive;
• ChildAttributes survive by identity, preserving Submodel routing;
• classes are additive;
• inline declarations merge by property;
• an event or scalar attribute has one owner;
• structural attributes remain protected;
• conflicting ownership produces a DiagnosticError rather than an accidental second handler.

For example, if the Button already owns its click transition, a Behavior cannot silently install a competing OnClick at the same Slot.

That is the main reason to use this adapter instead of another className or attributes escape hatch.