Add Pitopn digital shop with FastAPI, Postgres 17, and Docker Compose

Co-authored-by: Cursor <cursoragent@cursor.com>

app/models.py

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+from datetime import datetime
+from decimal import Decimal
+
+from sqlalchemy import Boolean, DateTime, Numeric, String, Text, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class Category(Base):
+    __tablename__ = "categories"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    slug: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    name: Mapped[str] = mapped_column(String(120))
+    description: Mapped[str] = mapped_column(Text, default="")
+    sort_order: Mapped[int] = mapped_column(default=0)
+
+
+class Product(Base):
+    __tablename__ = "products"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    slug: Mapped[str] = mapped_column(String(120), unique=True, index=True)
+    title: Mapped[str] = mapped_column(String(200))
+    short_description: Mapped[str] = mapped_column(String(300))
+    description: Mapped[str] = mapped_column(Text, default="")
+    price: Mapped[Decimal] = mapped_column(Numeric(10, 2))
+    currency: Mapped[str] = mapped_column(String(3), default="RUB")
+    category_slug: Mapped[str] = mapped_column(String(64), index=True)
+    image_gradient: Mapped[str] = mapped_column(String(120), default="mint")
+    is_featured: Mapped[bool] = mapped_column(Boolean, default=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    delivery_note: Mapped[str] = mapped_column(String(200), default="Мгновенная выдача")
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now()
+    )