# Release Notes - v2.139.0

**Release Date**: October 6, 2025
**Sprint**: Sprint 20 - UX Improvements & Optimizations
**Status**: ✅ Complete

## 🎯 Summary

v2.139.0 completes Sprint 20, delivering major UX improvements, performance optimizations, and comprehensive CLI integration for project scaffolding and maintenance. This release addresses all issues discovered during Sprint 19 dogfooding, with a focus on developer experience, error handling, and testing infrastructure.

## ✨ Major Features

### 🏗️ Project Scaffolding & Maintenance System (Sprint 19/20)

Complete project scaffolding and maintenance system with quality gates integration:

- **Agent Scaffolding**: Generate MCP agents with basic, stateful, or hybrid templates
- **WASM Scaffolding**: Create WebAssembly projects with wasm-labs or pure-wasm frameworks
- **Roadmap Maintenance**: Automated roadmap health checks and status synchronization
- **Quality Gates**: Integrated quality enforcement (clippy, tests, coverage, complexity)
- **Git Hooks**: Pre-commit quality gates with configurable enforcement

**CLI Commands**:
```bash
# Scaffold MCP agent
pmat scaffold agent --name my_agent --template basic

# Scaffold WASM project
pmat scaffold wasm --name my_wasm --framework wasm-labs

# Maintain roadmap
pmat maintain roadmap --validate --health --fix

# Quality gates
pmat quality-gates init
pmat quality-gates run --report
```

### 🚀 Performance Improvements (TICKET-PMAT-6001)

**Health Command Optimization** - 95% performance improvement:
- Default health check: 14s (down from 300s+)
- Quick mode (`--quick`): <10s
- Opt-in model for comprehensive checks
- Individual check flags for targeted testing

```bash
# Quick health check (build only)
pmat maintain health --quick

# Full health check (all checks)
pmat maintain health --all

# Individual checks
pmat maintain health --check-build --check-tests
```

### 🎨 UX Improvements (TICKET-PMAT-6002, 6006)

**Progress Indicators** - Visual feedback for long operations:
- Spinners for operations >5s
- Duration display on completion
- Auto-detects TTY and CI environments
- Respects `NO_COLOR` and quiet mode

**Output Control**:
- `--quiet/-q` flag for errors-only output
- `--color auto|always|never` for color control
- `PMAT_QUIET` environment variable support

```bash
# Quiet mode
pmat scaffold agent --name test --quiet

# No color output
pmat maintain health --color never

# CI-friendly
CI=1 pmat quality-gates run
```

### 🛡️ Enhanced Error Messages (TICKET-PMAT-6004)

Rich error formatting with actionable suggestions:
- Full file paths in error messages
- Context-aware suggestions
- Consistent error formatting
- Helpful troubleshooting guidance

**Example**:
```
Error: Failed to read /home/user/project/ROADMAP.md

Suggestions:
  - Run 'pmat maintain roadmap' from project root
  - Ensure you're in the correct directory
  - Check if ROADMAP.md exists in your project
```

### 🧪 Comprehensive CLI Integration Tests (TICKET-PMAT-6005)

27 new integration tests using `assert_cmd`:
- End-to-end binary testing
- All Sprint 19/20 CLI commands covered
- Property-based testing included
- All tests maintain CC <5

**Test Coverage**:
- Agent scaffolding (basic, stateful, hybrid templates)
- WASM scaffolding (wasm-labs, pure-wasm frameworks)
- Roadmap validation, health, and fixing
- Quality gates (init, validate, show, run)
- Error handling and edge cases

## 📚 Documentation

### New Documentation

**SCAFFOLDING-AND-MAINTENANCE.md** (500+ lines):
- Complete feature guide with TDD examples
- Agent scaffolding templates and usage
- WASM frameworks and configuration
- Roadmap maintenance workflows
- Quality gates setup and configuration
- Git hooks integration
- CLI reference for all commands
- MCP integration guide
- Property-based testing examples
- Troubleshooting guide
- Performance benchmarks

**SPRINT-20-SUMMARY.md**:
- Complete Sprint 20 documentation
- All 6 ticket details with metrics
- Success criteria verification
- Technical implementation details
- Lessons learned

### Documentation Updates

- Updated `docs/README.md` with prominent link to scaffolding guide
- Added TDD examples using `assert_cmd` throughout documentation
- Enhanced CLI reference with all new commands
- MCP integration documentation for agents

## 🐛 Bug Fixes

### TICKET-PMAT-6003: Documentation Naming Convention Fixes
- Fixed inconsistent naming: kebab-case → snake_case
- Updated all examples: `test-agent` → `test_agent`
- Ensured consistency across all documentation files

### Build Warnings Cleanup
- Removed unused imports from mutation executor tests
- Fixed Duration import in quality gates handler tests
- Clean build with no warnings

## 📦 Breaking Changes

None - This release is backward compatible with v2.138.x.

## 🔧 Technical Details

### New Modules
- `cli::error_context` - Rich error formatting with suggestions
- `cli::progress` - Progress indicator wrapper (CC=5)
- `tests::cli_integration_tests` - Comprehensive CLI integration tests (27 tests)

### Updated Modules
- `cli::commands` - Added quiet mode and color control flags
- `cli::handlers::generation_handlers` - Enhanced error messages and progress indicators
- `cli::handlers::roadmap_handler` - Enhanced error messages
- `cli::handlers::quality_gates_handler` - Enhanced error messages

### Dependencies
- Added `indicatif` 0.17.9 for progress indicators
- All tests use `assert_cmd` for end-to-end CLI testing

### Quality Metrics
- All new code maintains CC <10
- 27 new integration tests with CC <5
- Zero ignored tests for Sprint 20 features
- Clean build with no warnings
- 100% documentation coverage for new features

## 📊 Sprint 20 Metrics

### Completion
- **6/6 tickets completed** (100%)
- **Status**: ✅ All success criteria met

### Performance
- Health command: 95% improvement (300s+ → 14s)
- Quick mode: <10s target achieved
- All operations >5s have progress indicators

### Testing
- 27 new CLI integration tests
- All tests passing
- Property-based tests included
- End-to-end binary testing

### Code Quality
- All code CC <10
- Test code CC <5
- Zero warnings in release build
- Enhanced error handling throughout

## 🚀 Upgrade Guide

### For Existing Users

1. **Update to v2.139.0**:
   ```bash
   cargo install pmat --version 2.139.0
   ```

2. **New CLI Commands Available**:
   - Use `pmat scaffold agent` for MCP agent generation
   - Use `pmat scaffold wasm` for WASM project generation
   - Use `pmat maintain roadmap` for roadmap maintenance
   - Use `pmat quality-gates` for quality enforcement

3. **Quality Gates Setup** (if using new features):
   ```bash
   # Initialize quality gates config
   pmat quality-gates init

   # Customize .pmat-gates.toml as needed
   pmat quality-gates validate

   # Install git hooks (optional)
   pmat scaffold git-hooks
   ```

4. **Performance Improvements** (automatic):
   - Health checks now default to build-only (14s)
   - Use `--all` flag for comprehensive checks
   - Use `--quick` flag for fastest checks

5. **UX Improvements** (automatic):
   - Progress indicators for long operations
   - Use `--quiet` flag to disable
   - Color output respects environment variables

### For New Users

1. **Install PMAT**:
   ```bash
   cargo install pmat
   ```

2. **Scaffold Your First Agent**:
   ```bash
   pmat scaffold agent --name my_agent --template basic
   cd my_agent
   pmat maintain health --quick
   ```

3. **Review Documentation**:
   - See [SCAFFOLDING-AND-MAINTENANCE.md](../features/SCAFFOLDING-AND-MAINTENANCE.md) for complete guide
   - See [docs/README.md](../README.md) for documentation overview

## 🙏 Acknowledgments

This release was developed using:
- **Toyota Way**: Stop, fix, improve methodology
- **Extreme TDD**: Property tests, unit tests, >80% coverage
- **Dogfooding**: All features tested in real PMAT development
- **Claude Code**: AI-assisted development with quality gates

## 📝 Notes

### Dogfooding
All Sprint 20 features were dogfooded during development:
- Scaffolding system tested on real agent projects
- Roadmap maintenance used for PMAT roadmap
- Quality gates enforced on PMAT codebase
- CLI integration tests run on every build

### Future Work
See [ROADMAP.md](../../ROADMAP.md) for upcoming sprints and features.

## 🔗 Links

- **Repository**: [github.com/paiml/paiml-mcp-agent-toolkit](https://github.com/paiml/paiml-mcp-agent-toolkit)
- **Crates.io**: [crates.io/crates/pmat](https://crates.io/crates/pmat)
- **MCP Registry**: [registry.modelcontextprotocol.io](https://registry.modelcontextprotocol.io/v0/servers?search=pmat)
- **Documentation**: [Full Documentation](../README.md)
- **Sprint 20 Summary**: [SPRINT-20-SUMMARY.md](../sprints/SPRINT-20-SUMMARY.md)
- **Feature Guide**: [SCAFFOLDING-AND-MAINTENANCE.md](../features/SCAFFOLDING-AND-MAINTENANCE.md)

---

*Released: 2025-10-06 | Version: 2.139.0 | Sprint: 20*
