Release v2.0.0 - **BREAKING**: Simplified optimization system from dual environment variables to single GITLAB_MCP_OPTIMIZATION_LEVEL - **BREAKING**: Removed backwards compatibility for legacy optimization environment variables - Type-safe tool registration with programmatic tool mapping - Complete ToolName union type with compile-time verification - Performance improvements: 40-70% token reduction in optimized modes - **BREAKING**: Complex strategy pattern optimization system (15 files deleted) - Telemetry system for optimization analytics - 69% code reduction in tool registration (510 fewer lines) - 99% faster description generation with simple object lookup 🚀 Released with Claude Code Co-Authored-By: Claude <noreply@anthropic.com>