Add comprehensive architecture documentation with UML diagrams

README.md

@@ -303,6 +303,18 @@ Error converting JSON to markdown: Expecting property name enclosed in double qu
 - Supported file formats: PDF, JPG, JPEG, PNG, WEBP, GIF
 - Rate limits may apply depending on your Mistral AI account tier
 
+## Architecture Documentation
+
+For a comprehensive overview of the Mistral OCR architecture, including UML diagrams, sequence diagrams, and other visual representations, please refer to the [ARCHITECTURE.md](ARCHITECTURE.md) document. This documentation provides detailed insights into:
+
+- Class structure and relationships
+- Component architecture
+- Process workflows
+- Data flow through the system
+- User interaction patterns
+
+These diagrams are useful for understanding the system design, onboarding new contributors, and planning future enhancements.
+
 ## Contributing
 
 Contributions to Mistral OCR CLI are welcome! Here's how you can contribute:
@@ -319,7 +331,7 @@ Contributions to Mistral OCR CLI are welcome! Here's how you can contribute:
    ```
 5. **Submit a pull request**
 
-Please ensure your code follows the project's coding standards and includes appropriate tests and documentation.
+Please ensure your code follows the project's coding standards and includes appropriate tests and documentation. For understanding the codebase structure, refer to the [ARCHITECTURE.md](ARCHITECTURE.md) document.
 
 ## License