Merge PR #1135 (rebased)

# Conflicts:
#	xtask/src/main.rs

apps/lightcraft/Cargo.toml

@@ -48,3 +48,7 @@ muda = { workspace = true }
 objc2 = { workspace = true }
 objc2-app-kit = { workspace = true }
 objc2-foundation = { workspace = true }
+
+[dev-dependencies]
+# tests record why they skip (`cargo xtask ci` lists the skips)
+lightcraft-testkit = { workspace = true }

apps/lightcraft/src/window_gpu.rs

@@ -278,11 +278,11 @@ mod tests {
             ..wgpu::InstanceDescriptor::new_without_display_handle()
         });
         let Ok(adapter) = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions::default())) else {
-            eprintln!("no GPU adapter: skipped");
+            lightcraft_testkit::skip!(Gpu, "no GPU adapter");
             return;
         };
         let Ok((device, _queue)) = pollster::block_on(adapter.request_device(&wgpu::DeviceDescriptor::default())) else {
-            eprintln!("no GPU device: skipped");
+            lightcraft_testkit::skip!(Gpu, "no GPU device");
             return;
         };
         install_error_handler(&device);