Add test-master plugin for test generation and debugging

[yurekami]

Summary

This PR adds a new test-master plugin that provides comprehensive testing and debugging capabilities for Claude Code users.

Motivation

Developers spend 30-40% of their time on testing and debugging. Currently, no existing plugin comprehensively addresses this need. The test-master plugin fills this gap by providing:

• Automated test generation following project conventions
• Intelligent failure analysis with root cause identification
• Actionable fixes for common test issues

Features

Commands

Command	Description
/generate-tests	Generate comprehensive unit tests for specified files or functions
/debug-failure	Analyze test failures and stack traces to identify root causes

Agents

Agent	Description
test-generator	Expert test engineer that creates comprehensive, maintainable tests
failure-debugger	Test failure analyst that identifies root causes and suggests fixes

Usage Examples

# Generate tests
/generate-tests
"Can you generate tests for the UserService class?"

# Debug failures
/debug-failure
"My tests started failing after the last commit"

Plugin Structure

test-master/
├── .claude-plugin/
│   └── plugin.json          # Plugin metadata
├── commands/
│   ├── generate-tests.md    # Test generation command
│   └── debug-failure.md     # Failure debugging command
├── agents/
│   ├── test-generator.md    # Test engineering agent
│   └── failure-debugger.md  # Debugging specialist agent
└── README.md                # Documentation

Design Decisions

1. Multi-agent architecture: Similar to pr-review-toolkit, uses specialized agents for different tasks
2. Framework-agnostic: Detects and adapts to the project's existing testing framework
3. Practical focus: Emphasizes tests that catch real bugs, not academic coverage metrics

Checklist

• Follows standard plugin structure
• Includes comprehensive README.md
• Plugin metadata in .claude-plugin/plugin.json
• All commands and agents documented
• Added to plugins/README.md table

🤖 Generated with Claude Code