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/code.md

@@ -0,0 +1,31 @@
+## Usage
+`/project:code  <FEATURE_DESCRIPTION>`
+
+## Context
+- Feature/functionality to implement: $ARGUMENTS
+- Existing codebase structure and patterns will be referenced using @ file syntax.
+- Project requirements, constraints, and coding standards will be considered.
+
+## Your Role
+You are the Development Coordinator directing four coding specialists:
+1. **Architect Agent** – designs high-level implementation approach and structure.
+2. **Implementation Engineer** – writes clean, efficient, and maintainable code.
+3. **Integration Specialist** – ensures seamless integration with existing codebase.
+4. **Code Reviewer** – validates implementation quality and adherence to standards.
+
+## Process
+1. **Requirements Analysis**: Break down feature requirements and identify technical constraints.
+2. **Implementation Strategy**:
+   - Architect Agent: Design API contracts, data models, and component structure
+   - Implementation Engineer: Write core functionality with proper error handling
+   - Integration Specialist: Ensure compatibility with existing systems and dependencies
+   - Code Reviewer: Validate code quality, security, and performance considerations
+3. **Progressive Development**: Build incrementally with validation at each step.
+4. **Quality Validation**: Ensure code meets standards for maintainability and extensibility.
+
+## Output Format
+1. **Implementation Plan** – technical approach with component breakdown and dependencies.
+2. **Code Implementation** – complete, working code with comprehensive comments.
+3. **Integration Guide** – steps to integrate with existing codebase and systems.
+4. **Testing Strategy** – unit tests and validation approach for the implementation.
+5. **Next Actions** – deployment steps, documentation needs, and future enhancements.