Updated `dc-infra.yaml` to enable automatic restart (`unless-stopped`), introduce dynamic memory allocations via environment variables, and adjust healthcheck intervals for reduced load. Enhanced `postgresql.conf` with performance tuning comments, schema search path inclusion for Keycloak and app users, and SSL adjustments for internal communication.
- Reorganized `docker-compose.yaml` by splitting it into modular files: `dc-infra.yaml`, `dc-backend.yaml`, `dc-gui.yaml`, and `dc-ops.yaml`.
- Simplified structure by removing redundant `docker-compose.frontend.yaml` and `docker-compose.services.yaml` files.
- Improved maintainability and modularity of service definitions across infrastructure, backend, GUI, and ops layers.
