feat: enhance face-lock service with improved upload handling and response structure

- Updated README.md to reflect new features and API changes.
- Introduced versioning in app initialization.
- Enhanced configuration management in app/config.py with new validation functions.
- Refactored main.py to improve request handling and response generation.
- Added new models in app/models.py for structured API responses.
- Implemented a dedicated UI rendering function in app/ui.py.
- Improved Docker configuration for better security and health checks.
- Updated tests to cover new validation rules and response formats.
- Added CLAUDE.md for project guidelines and working rules.

requirements.txt

@@ -1,5 +1,5 @@
-fastapi
-uvicorn[standard]
-opencv-python-headless
-python-dotenv
-python-multipart
+fastapi==0.135.3
+opencv-python-headless==4.13.0.88
+python-dotenv==1.2.2
+python-multipart==0.0.22
+uvicorn[standard]==0.41.0