🔐 Automated npm Publishing

Implemented tag-based automated npm publishing workflow with cryptographic provenance.

Features

• Tag-based publishing: Push git tag to automatically publish to npm
• Provenance signing: Cryptographic build transparency
• Automated workflow: Build, test, and publish via GitHub Actions
• Security: Granular npm tokens with 90-day expiration

Issues

• #133 - Update npm publishing to use provenance and granular access tokens

Release

Released as v0.7.4

Published to npm: @migration-script-runner/core@0.7.3 (with provenance)