World Sandbox is the authored graphics reference lab at @shared/scenes/world_sandbox.scene.yaml. It provides pressure for environment lighting and mood, material response, scale, sightlines, scene composition, and active-pawn traversal.

Use BulletSketch Play in Viewport for in-editor preview or Run Standalone for the external generic scene runner. World Sandbox has no dedicated application wrapper and no runtime bundle.

Automated proof includes direct loading in session_active_pawn_core_tests, asset/provenance checks in graphics_asset_contract_tests, and editor_standalone_world_sandbox_runner_tests for the generic-runner workflow.

The scene and its dependencies live in the full shared workspace depot. The graphics roadmap may use World Sandbox as a reference surface, but that does not turn the lab into a product or packaged application.