Streamlined Keycloak configurations with defaults for development and production in `.env`. Added health checks and improved environment variable documentation with comments to differentiate local and server deployments. Ensured compatibility with pre-built registry images.
Introduced detailed documentation for the API Gateway, including its configuration and responsibilities in the system (e.g., routing, security, and cross-cutting concerns). Added a README for the core model directory to define its structure and workflow. Created a new backend README to describe its components and their documentation structure. Simplified and clarified legacy specifications for archiving purposes.