Add Node.js 24 support to CLI and project

[Copilot]

What/Why?

Extends Node.js support to include version 24 across the Catalyst project. Updates version constraints in CLI packages, user-facing CLI validation, and documentation to allow Node 20, 22, or 24.

Changes:

• Updated .nvmrc to 24 (used by CI workflows and local development)
• Extended engines.node in packages/catalyst/package.json and packages/create-catalyst/package.json to include ^24.0.0
• Updated packages/create-catalyst/bin/index.cjs to include '^24' in the catalystRequiredNodeVersions array (user-facing CLI version check)
• Updated README.md requirements section to reflect Node 20, 22, or 24 support

Testing

• Verified all CLI tests pass (38 tests in @bigcommerce/catalyst)
• Verified all create-catalyst tests pass (2 tests)
• Verified create-catalyst package builds successfully
• Confirmed engines field accepts Node 24 semver range
• Validated user-facing Node version check includes Node 24

Migration

No migration needed. Changes are additive - existing Node 20 and 22 users are unaffected.

Original prompt

update the CLI to allow node 24; make sure node 24 is allowed throughout the project

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[bookernath]

@copilot Is there any user-facing copy in the CLI that needs to get updated?

[Copilot]

@copilot Is there any user-facing copy in the CLI that needs to get updated?

Yes, there was! Updated packages/create-catalyst/bin/index.cjs to include '^24' in the catalystRequiredNodeVersions array. This array controls the user-facing error message shown when someone runs create-catalyst with an unsupported Node version.

Commit: b3ddd23