Introduced a comprehensive guide for secure production secret handling (`docs/security/secret-management.md`). Updated `.env.example` files with clearer comments on best practices, emphasizing not hardcoding secrets and implementing rotation strategies. Enhanced README with a new section linking to the secret management documentation.
Introduced a secure, repeatable production proxy profile for reverse proxy and HTTPS deployment, including NGINX configuration, environment variables, and CORS guidance. Added CI workflow for static validation of proxy guardrails and detailed documentation to ensure best practices in deployment.
Replaced German text with English across the frontend UI for consistency and accessibility. Enhanced clarity in `.env.example` and `README.md`, adding detailed comments for environment variables and prerequisites. Improved documentation for setup, security, and troubleshooting.
