v0.2.0 Release - Production-Ready Firebase Migrations

Status: ✅ Complete - All 52 issues closed

Major upgrade bringing production-ready features and MSR Core v0.8.4 integration.

🎯 Key Achievements

🔒 Migration Locking (Epic #18)

• Distributed locking for Kubernetes, Docker, multi-instance deployments
• Prevents concurrent migration race conditions
• FirebaseLockingService with atomic transactions
• CLI commands: lock-status, force-release-lock
• Comprehensive 300+ line locking guide

📦 MSR Core v0.8.4 Integration (Epic #19)

• Upgraded from migration-script-runner v0.1.11 to @migration-script-runner/core v0.8.4
• Latest core features: handler access API, improved locking lifecycle
• Full compatibility with MSR ecosystem

📚 Documentation Portal (Epic #20)

• Complete Jekyll documentation site with just-the-docs theme
• 25 documentation files covering all features
• Migration guide: v0.1.x → v0.2.0
• API reference, guides, and examples
• Live site: https://migration-script-runner.github.io/msr-firebase

🔧 Code Quality & Type Safety (Issue #21)

• Generic type parameters throughout codebase
• Removed any types (except pragmatic mixKey)
• Added readonly modifiers
• 100% test coverage (statements/functions/lines)
• SonarCloud Quality Gate: PASSED
• 285 tests (171 unit + 114 integration)

📊 Statistics

• 52 issues closed across 3 epics
• 25 documentation files created/updated
• 285 passing tests (100% coverage)
• Zero critical bugs or technical debt
• Production-ready distributed locking

🔄 Breaking Changes

Only ONE breaking change:

• Package name: msr-firebase → @migration-script-runner/firebase
• Simple find-and-replace migration (5-15 minutes)

All other APIs remain backward compatible

✨ New Features

• Migration locking for distributed deployments
• Type-safe generic APIs
• Enhanced CLI with lock management
• Comprehensive documentation portal
• Improved error types (TypeError, ReferenceError, LockOperationError)
• Firebase Emulator integration tests
• GitHub Actions CI/CD with Java 21 support

📖 Documentation

• Migration Guide: /docs/version-migration/v0.1-to-v0.2.md
• Locking Guide: /docs/guides/migration-locking.md
• API Reference: /docs/api/
• Examples: /docs/examples/

🚀 Release Readiness

• ✅ All epics complete
• ✅ All issues closed (52/52)
• ✅ Documentation complete and verified
• ✅ Tests passing (285/285)
• ✅ Quality gates passing
• ✅ Migration guide ready
• ⏳ Package version update (0.1.6 → 0.2.0) - final pre-release step

Next Step: Update package.json version to 0.2.0 and publish to npm.

🙏 Credits

Developed and tested by @vlavrynovych
Part of the Migration Script Runner ecosystem
Proudly made in Ukraine 🇺🇦