docs: add comprehensive CLI documentation for issue #4
Added comprehensive documentation for core/cli including:
1. Complete CLI Reference (cli-reference.md)
- All 30 commands with detailed descriptions
- Subcommands, flags, and usage examples
- Organized by category (Development, AI/ML, DevOps, etc.)
2. Build Variants System (build-variants.md)
- How to create custom builds (minimal, dev, devops, ai/ml)
- Three methods: import commenting, multiple main.go, build tags
- External variant repos (core/php, core/ci)
- Size optimization and compression tips
3. MCP Integration (mcp-integration.md)
- Model Context Protocol server setup
- All available tools (file ops, RAG, metrics, process mgmt, WebView/CDP)
- Transport modes (stdio, TCP)
- Security considerations and workspace restriction
- Use cases and troubleshooting
4. Environment Variables (environment-variables.md)
- All supported environment variables
- Configuration file locations (user, project, registry)
- CORE_CONFIG_* mapping system
- Service-specific vars (MCP, RAG, ML, Git, etc.)
- Best practices and troubleshooting
5. Updated Navigation
- Enhanced cmd/index.md with categories and quick links
- Updated mkdocs.yml with new documentation pages
Fixes #4
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Clotho
36f790ed22