Release 0.2.0 – EMBP Architecture, Docker CI, and Lambda Integration

What’s New in v0.2.0

This release introduces a clean architecture overhaul using the Explicit Module Boundary Pattern (EMBP), a fully containerized development and CI pipeline, and integration test support for AWS Lambda custom runtimes.

✨ Added

• EMBP Architecture: Adopted Explicit Module Boundary Pattern for modular crate structure
  • Created mod.rs gateways across key modules (domain/, repository/)
  • Improved encapsulation, import hygiene, and architectural clarity
• Docker-Based Development Workflow:
  • Added Docker Compose setup with Postgres and Redis
  • scripts/build.sh provides unified lint/format/test/build pipeline
• Standardized CI Pipeline:
  • GitHub Actions runs tests and builds inside containers
  • Includes clippy, rustfmt, unit tests, and Lambda integration tests
  • Added containerized Lambda testing via cargo lambda invoke
• Toolchain Pinning: Locked Rust version to 1.85 for reproducibility

🔄 Changed

• All builds and tests now run fully inside containers
• Replaced curl-based healthchecks with netcat TCP-level probes

🐛 Fixed

• Integration test flakiness due to HashMap ordering:
  • Introduced order-agnostic assertions and deduplication checks

⚠️ Breaking Changes

• Local development now requires Docker instead of native Rust-only workflows