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/database/base.py

@@ -0,0 +1,30 @@
+"""Base model for all database models."""
+
+from datetime import datetime
+from typing import Any
+from uuid import uuid4
+
+from sqlalchemy import Column, DateTime
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import DeclarativeBase, declared_attr
+
+
+class Base(DeclarativeBase):
+    """Base class for all database models."""
+
+    # Generate __tablename__ automatically from class name
+    @declared_attr.directive
+    def __tablename__(cls) -> str:
+        """Generate table name from class name."""
+        # Convert CamelCase to snake_case
+        name = cls.__name__
+        return "".join(["_" + c.lower() if c.isupper() else c for c in name]).lstrip("_")
+
+    # Common columns for all models
+    id: Any = Column(UUID(as_uuid=True), primary_key=True, default=uuid4)
+    created_at: Any = Column(DateTime, default=datetime.utcnow, nullable=False)
+
+    def dict(self) -> dict[str, Any]:
+        """Convert model to dictionary."""
+        return {c.name: getattr(self, c.name) for c in self.__table__.columns}
+