🚀 Complete Migration: pnpm + Service Account Authentication

🎯 Major Infrastructure Upgrade Release

This release marks the completion of two critical infrastructure migrations for the ZenUML web-sequence project.

✅ What's New:

🔄 Package Manager Migration: yarn → pnpm

• ✅ Faster CI builds with pnpm caching
• ✅ Better dependency management with strict resolution
• ✅ Reduced node_modules size with efficient linking
• ✅ Both staging and production workflows migrated

🔐 Authentication Migration: Firebase Token → Service Account

• ✅ Eliminated deprecation warnings - No more Firebase token warnings
• ✅ Enhanced security with service account-based authentication
• ✅ Future-proof solution compatible with Firebase roadmap
• ✅ Proper IAM permissions for Firebase deployment

🏆 Technical Achievements:

Component	Before	After	Status
Package Manager	yarn	pnpm	✅ UPGRADED
CI Build Speed	Slower	Faster (pnpm cache)	✅ IMPROVED
Firebase Auth	Deprecated Token	Service Account	✅ MODERNIZED
Security	Token-based	IAM Role-based	✅ ENHANCED
Future Compatibility	At Risk	Future-proof	✅ SECURED

🔧 Infrastructure Details:

GitHub Actions Workflows:

• deploy-staging.yml: pnpm + service account authentication
• deploy-prod.yml: pnpm + service account authentication

Service Accounts Created:

• Staging: github-firebase-staging@staging-zenuml-27954.iam.gserviceaccount.com
• Production: github-actions-firebase-prod@web-sequence-local.iam.gserviceaccount.com

Permissions Assigned:

• roles/firebase.admin - Full Firebase deployment access
• roles/iam.serviceAccountUser - Required for Functions deployment

🚀 Release Validation:

This release has been tested and verified on both staging and production environments with successful deployments.

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Release from master branch with complete infrastructure modernization ✨