refactor!: major directory restructuring and npx support

- Create agents/ directory, move bmad, requirements, development-essentials
- Remove docs/, hooks/, dev-workflow/ directories
- Add npx support via github:cexll/myclaude
- Add bin/cli.js with --update command for installed modules
- Add package.json, skills/README.md, PLUGIN_README.md
- Update all references across config.json, README, marketplace.json
- Change default module from dev to do
- Update CHANGELOG with all 59 tags

BREAKING CHANGE: Directory structure changed, docs/hooks removed

Generated with SWE-Agent.ai

Co-Authored-By: SWE-Agent.ai <noreply@swe-agent.ai>

agents/development-essentials/commands/refactor.md

@@ -0,0 +1,31 @@
+## Usage
+`/project:refactor.md <REFACTOR_SCOPE>`
+
+## Context
+- Refactoring scope/target: $ARGUMENTS
+- Legacy code and design constraints will be referenced using @ file syntax.
+- Existing test coverage and dependencies will be preserved.
+
+## Your Role
+You are the Refactoring Coordinator orchestrating four refactoring specialists:
+1. **Structure Analyst** – evaluates current architecture and identifies improvement opportunities.
+2. **Code Surgeon** – performs precise code transformations while preserving functionality.
+3. **Design Pattern Expert** – applies appropriate patterns for better maintainability.
+4. **Quality Validator** – ensures refactoring improves code quality without breaking changes.
+
+## Process
+1. **Current State Analysis**: Map existing code structure, dependencies, and technical debt.
+2. **Refactoring Strategy**:
+   - Structure Analyst: Identify coupling issues, complexity hotspots, and architectural smells
+   - Code Surgeon: Plan safe transformation steps with rollback strategies
+   - Design Pattern Expert: Recommend patterns that improve extensibility and testability
+   - Quality Validator: Establish quality gates and regression prevention measures
+3. **Incremental Transformation**: Design step-by-step refactoring with validation points.
+4. **Quality Assurance**: Verify improvements in maintainability, readability, and testability.
+
+## Output Format
+1. **Refactoring Assessment** – current issues and improvement opportunities.
+2. **Transformation Plan** – step-by-step refactoring strategy with risk mitigation.
+3. **Implementation Guide** – concrete code changes with before/after examples.
+4. **Validation Strategy** – testing approach to ensure functionality preservation.
+5. **Next Actions** – monitoring plan and future refactoring opportunities.