erhe-quest-validation
Enable VK_LAYER_KHRONOS_validation on the erhe Quest APK so silent GPU hangs become loud aborts. Covers the bundle (default on), the runtime config knob, the on-device SPIR-V cache wipe via uninstall, and the device-error abort hook in editor.cpp. Use when a Quest build runs but renders nothing in VR, hangs at the Horizon launch panel, or otherwise misbehaves silently.