Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

backend/app/core/deps.py

@@ -0,0 +1,12 @@
+"""Dependency injection utilities."""
+
+from typing import Annotated, Generator
+
+from fastapi import Depends
+from sqlalchemy.orm import Session
+
+from app.database.session import get_db
+
+# Database session dependency
+DatabaseSession = Annotated[Session, Depends(get_db)]
+