VRChat World SDK 3 guide for scene and Inspector setup, component placement, optimization, and upload. Use for VRChat world scene configuration, VRC SDK components, layers, baked lighting, Quest/Android performance, Dynamics for Worlds, Build Panel warning triage, validation, and upload. Covers WorldQualitySettings, VRC_SceneDescriptor, VRC_Pickup, VRC_Station, VRC_Mirror, VRC_ObjectSync, VRC_CameraDolly, spawn points, collision matrices, PhysBone and Contact component placement, Box Contacts, Global Avatar PhysBone Colliders, and VRCPhysBoneCollider component setup. Active support / last verified: SDK 3.10.5. Triggers on: VRChat world scene, VRC SDK, scene setup, component placement, optimization, Quest support, light baking, upload, SDK validation, Build Panel warning, Auto Fix, red warning, yellow warning, or white warning. Do not use for UdonSharp C# or VRCTween calls; use unity-vrc-udon-sharp for runtime scripting. UdonSharp package, asmdef, and Version Defines work also belongs to that skill.
