Initial project scaffold: FastAPI + React/Vite + PostgreSQL SaaS starter

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/models/__init__.py

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+from app.models.user import User
+
+__all__ = ["User"]

backend/app/models/user.py

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+import uuid
+
+from sqlalchemy import Boolean, String
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
+    email: Mapped[str] = mapped_column(String, unique=True, index=True, nullable=False)
+    hashed_password: Mapped[str] = mapped_column(String, nullable=False)
+    full_name: Mapped[str] = mapped_column(String, nullable=True)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    is_superuser: Mapped[bool] = mapped_column(Boolean, default=False)