# Changelog

Notable user-facing changes to `dance-lessons-coach`. Format inspired by [Keep a Changelog](https://keepachangelog.com/), versioning follows [Semantic Versioning 2.0.0](https://semver.org/) (see [`documentation/version-management-guide.md`](documentation/version-management-guide.md)).

The historical phases of foundational development (Phase 1 to Phase 9) are documented in [`documentation/HISTORY.md`](documentation/HISTORY.md).

## [Unreleased]

### Added

_(items pending release; move to a versioned section when tagged)_

### Changed

### Fixed

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## 2026-04-05 — Architecture Documentation

- ✅ Added comprehensive ADR directory with 9 decision records
- ✅ Enhanced Zerolog vs Zap analysis in logging ADR
- ✅ Updated `README.md` and `AGENTS.md` with ADR references
- ✅ Documented hybrid testing approach
- ✅ Added BDD testing decision record

## 2026-04-04 — Observability & Testing

- ✅ OpenTelemetry integration with Jaeger
- ✅ Middleware-only tracing approach
- ✅ Comprehensive telemetry configuration
- ✅ BDD testing framework setup
- ✅ Hybrid testing strategy documentation

## 2026-04-03 — Production Readiness

- ✅ Graceful shutdown with readiness endpoints
- ✅ Configuration management with Viper
- ✅ JSON logging configuration
- ✅ File output logging support
- ✅ Comprehensive error handling

## 2026-04-02 — Web API Foundation

- ✅ Chi router integration
- ✅ Versioned API endpoints (`/api/v1`)
- ✅ Health and readiness endpoints
- ✅ JSON responses with proper headers
- ✅ Interface-based design patterns

## 2026-04-01 — Project Foundation

- ✅ Go 1.26.1 environment setup
- ✅ Project structure with `cmd/` and `pkg/`
- ✅ Core Greet service implementation
- ✅ CLI interface
- ✅ Unit tests with table-driven approach