Bring license headers to 2026

The header rule takes the current year as the end of the range, as upstream's
does; 581 sources still ended at 2025, which failed lint. Lint never ran to
completion here, so this went unseen.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

packages/x-global/src/index.ts

@@ -1,4 +1,4 @@
-// Copyright 2017-2025 @pezkuwi/x-global authors & contributors
+// Copyright 2017-2026 @pezkuwi/x-global authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 export { packageInfo } from './packageInfo.js';

packages/x-global/src/mod.ts

@@ -1,4 +1,4 @@
-// Copyright 2017-2025 @pezkuwi/x-global authors & contributors
+// Copyright 2017-2026 @pezkuwi/x-global authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 export * from './index.js';