Overall revamp and update the documentation and inline documentation of the project

[arnaudlh]

Description

Conduct a comprehensive revamp and update of all project documentation, including README files, inline code documentation, user guides, and developer documentation. This will improve project accessibility, maintainability, and onboarding experience for new users and contributors.

Current Documentation State

The rover project currently lacks comprehensive documentation coverage across:

• Main repository documentation
• Inline code comments and documentation
• User guides and tutorials
• Developer contribution guidelines
• API documentation
• Architecture documentation

Documentation Areas to Address

1. Repository Documentation

• Update main README.md with clear project overview
• Add comprehensive installation and setup instructions
• Create detailed usage examples and tutorials
• Add troubleshooting and FAQ sections
• Include architecture overview and diagrams

2. Inline Code Documentation

• Add comprehensive comments to shell scripts (88% of codebase)
• Document Dockerfile instructions and build process
• Add docstrings to Python modules
• Document HCL configurations and variables
• Comment Makefile targets and processes

3. User Documentation

• Create getting started guide
• Add configuration reference documentation
• Document all CLI commands and options
• Provide deployment scenarios and examples
• Add integration guides for CI/CD pipelines

4. Developer Documentation

• Create contributing guidelines (CONTRIBUTING.md)
• Add development environment setup instructions
• Document code standards and conventions
• Create pull request and issue templates
• Add testing documentation and guidelines

5. Technical Documentation

• Document system architecture and components
• Add Azure integration and requirements
• Document Terraform workflows and patterns
• Create security and best practices guide
• Add performance considerations and tuning

Documentation Standards

• Format: Use Markdown for consistency
• Structure: Follow clear hierarchical organization
• Examples: Include practical, runnable examples
• Accessibility: Ensure documentation is beginner-friendly
• Maintenance: Establish process for keeping docs up-to-date
• Versioning: Align documentation with release versions

Tools and Automation

• Set up documentation linting and validation
• Create automated checks for broken links
• Implement documentation generation from code comments
• Add documentation review process to PR workflow
• Consider documentation site generation (e.g., GitHub Pages)

Success Metrics

• All major features and workflows are documented
• New users can successfully deploy rover following documentation
• Contributors can set up development environment using docs
• Documentation passes accessibility and clarity reviews
• Reduced support requests due to improved self-service documentation

Acceptance Criteria

• README.md provides clear project overview and quick start
• All shell scripts have adequate inline documentation
• User guide covers all major use cases
• Developer documentation enables easy contribution
• Documentation is consistently formatted and organized
• All examples are tested and verified working
• Documentation review process is established

Additional Context

This documentation overhaul will significantly improve the project's accessibility and maintainability. Given the current 88% shell script composition, special attention should be paid to documenting the script logic and workflows. The documentation should support both the current Docker-based approach and future architectural changes (like the planned Golang conversion).

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Review Note (2026-01-12): High priority documentation issue. With major architectural changes underway (Rust migration), comprehensive documentation is critical. This should be coordinated with the migration efforts.