Three.js editor utilities

Shared bounds, layers, clipping, renderer ownership, preview environment and detached scene capture used by Volter Editor's modeling integration.

This package does not yet own the interactive viewport. The current Three-aware editor core retains that implementation; full extraction remains deferred. No game-runtime, DOM authoring, physics or gameplay packages are dependencies.

Structural object marks retain their existing keys and behavior. Their readers are included here because bounds and editor-layer filtering need them; importing these small modules must not pull in a gameplay runtime.

Run npm run typecheck -w @volter/editor-threejs through the active World. See NOTICE for the per-file license distinction. This package remains private while the editor migration and complete distribution review are unfinished.