# Development Experience Layer Detailed Design

## SDK Architecture
### Core Modules
- **Project Management**: Scaffolding, dependency management
- **Agent Builder**: High-level API for agent construction
- **Testing Utilities**: Mock services, assertion libraries
- **Debugging Tools**: Interactive REPL, state inspection

## CLI Design
### Command Structure
```
adc [command] [options]

Commands:
  init      Initialize new agent project
  build     Compile agent artifacts
  test      Run test suite
  debug     Launch debug session
  deploy    Package and deploy agent
```

## Testing Framework Features
- **Test Fixtures**: Pre-configured test environments
- **Assertion Library**: Domain-specific assertions
- **Mock Services**: Simulated external dependencies
- **Performance Profiling**: Execution time metrics

## Documentation System
- **API Reference**: Auto-generated from code
- **Tutorials**: Step-by-step guides
- **Examples**: Ready-to-run code samples
- **Troubleshooting**: Common issues and solutions

## Performance Metrics
| Component | Target Latency |
|-----------|----------------|
| CLI Startup | <500ms |
| Test Execution | <100ms per test |
| Debug Session | <1s connection |