Apply lint's own fixes to the sr25519 sources and network interfaces

Import order and stray blank lines left by the scure-sr25519 swap, plus the
2026 headers of these files. eslint --fix output; no code changes.

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

packages/util-crypto/src/sr25519/agreement.ts

@@ -1,8 +1,7 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import { getSharedSecret } from '@pezkuwi/scure-sr25519';
-
 import { u8aToU8a } from '@pezkuwi/util';
 
 /**

packages/util-crypto/src/sr25519/derive.ts

@@ -1,10 +1,9 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Keypair } from '../types.js';
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { isU8a } from '@pezkuwi/util';
 
 export function createDeriveFn (derive: (pair: Uint8Array, cc: Uint8Array) => Uint8Array): (keypair: Keypair, chainCode: Uint8Array) => Keypair {

packages/util-crypto/src/sr25519/derivePublic.ts

@@ -1,8 +1,7 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { isU8a, u8aToU8a } from '@pezkuwi/util';
 
 export function sr25519DerivePublic (publicKey: string | Uint8Array, chainCode: Uint8Array): Uint8Array {

packages/util-crypto/src/sr25519/pair/fromSeed.ts

@@ -1,10 +1,9 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Keypair } from '../../types.js';
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { u8aToU8a } from '@pezkuwi/util';
 
 /**

packages/util-crypto/src/sr25519/sign.ts

@@ -1,10 +1,9 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Keypair } from '../types.js';
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { u8aToU8a } from '@pezkuwi/util';
 
 /**

packages/util-crypto/src/sr25519/verify.ts

@@ -1,8 +1,7 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { u8aToU8a } from '@pezkuwi/util';
 
 /**

packages/util-crypto/src/sr25519/vrfSign.ts

@@ -1,11 +1,11 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import type { Keypair } from '../types.js';
 
 import { randomBytes } from '@noble/hashes/utils';
-import * as sr25519 from '@pezkuwi/scure-sr25519';
 
+import * as sr25519 from '@pezkuwi/scure-sr25519';
 import { u8aToU8a } from '@pezkuwi/util';
 
 const EMPTY_U8A = new Uint8Array();

packages/util-crypto/src/sr25519/vrfVerify.ts

@@ -1,8 +1,7 @@
-// Copyright 2017-2025 @pezkuwi/util-crypto authors & contributors
+// Copyright 2017-2026 @pezkuwi/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
 import * as sr25519 from '@pezkuwi/scure-sr25519';
-
 import { u8aToU8a } from '@pezkuwi/util';
 
 const EMPTY_U8A = new Uint8Array();