fix(experimental): normalize luDF SPDX headers

Author: ibgreen-openai

modules/experimental/src/gpu-primitives/gpu-batch-hash-index.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import {GraphVectorView, type GPUCommandGraph, type GraphDataView} from './gpu-command-graph';
 import {

modules/experimental/src/ludf/index.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 export {LuDataFrame} from './lu-data-frame';
 export type {

modules/experimental/src/ludf/lu-data-frame.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import type {BufferLayout} from '@luma.gl/core';
 import {

modules/experimental/test/gpu-primitives/gpu-batch-hash-index.node.spec.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import {Buffer} from '@luma.gl/core';
 import {

modules/experimental/test/gpu-primitives/gpu-batch-hash-index.spec.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import test from 'test/utils/vitest-tape';
 import {Buffer, type Device} from '@luma.gl/core';

modules/experimental/test/ludf/lu-data-frame.node.spec.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import {readFileSync} from 'node:fs';
 

modules/experimental/test/ludf/lu-data-frame.spec.ts

@@ -1,6 +1,6 @@
 // luma.gl
 // SPDX-License-Identifier: MIT
-// Copyright (c) vis.gl contributors
+// SPDX-FileCopyrightText: Copyright (c) vis.gl contributors
 
 import {Buffer, type Device} from '@luma.gl/core';
 import {LuDataFrame} from '@luma.gl/experimental/ludf';