docs: simplify verification workflow

scripts/verify-node-version.mjs

@@ -1,26 +0,0 @@
-import { readFileSync } from 'node:fs';
-import { fileURLToPath } from 'node:url';
-import { dirname, resolve } from 'node:path';
-
-const root = resolve(dirname(fileURLToPath(import.meta.url)), '..');
-const packageJson = JSON.parse(readFileSync(resolve(root, 'package.json'), 'utf8'));
-const nvmVersion = readFileSync(resolve(root, '.nvmrc'), 'utf8').trim();
-const expectedMajor = nvmVersion.replace(/^v/, '').split('.')[0];
-const expectedEngine = `${expectedMajor}.x`;
-
-if (packageJson.engines?.node !== expectedEngine) {
-  throw new Error(
-    `Node runtime contracts disagree: .nvmrc=${nvmVersion}, package.json engines.node=${packageJson.engines?.node ?? 'missing'}`,
-  );
-}
-
-const actualVersion = process.versions.node;
-const actualMajor = actualVersion.split('.')[0];
-if (actualMajor !== expectedMajor) {
-  console.error(
-    `Unsupported Node.js runtime: expected ${expectedEngine}, actual ${actualVersion}. Activate .nvmrc before running repository checks.`,
-  );
-  process.exit(1);
-}
-
-console.log(`Node.js runtime verified: ${actualVersion} (${expectedEngine})`);