Implement FastAPI Temporal MVP pipeline

app/infra/db/models/workflow_run.py

@@ -0,0 +1,36 @@
+"""Workflow run ORM model."""
+
+from sqlalchemy import Enum, ForeignKey, Integer, String
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.domain.enums import OrderStatus, WorkflowStepName
+from app.infra.db.base import Base, TimestampMixin
+
+
+class WorkflowRunORM(TimestampMixin, Base):
+    """Persisted workflow execution state."""
+
+    __tablename__ = "workflow_runs"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    order_id: Mapped[int] = mapped_column(ForeignKey("orders.id"), nullable=False, index=True)
+    workflow_id: Mapped[str] = mapped_column(String(255), nullable=False, unique=True)
+    workflow_type: Mapped[str] = mapped_column(String(255), nullable=False)
+    status: Mapped[OrderStatus] = mapped_column(
+        Enum(OrderStatus, native_enum=False),
+        nullable=False,
+        default=OrderStatus.CREATED,
+    )
+    current_step: Mapped[WorkflowStepName | None] = mapped_column(
+        Enum(WorkflowStepName, native_enum=False),
+        nullable=True,
+    )
+
+    order = relationship("OrderORM", back_populates="workflow_runs")
+    steps = relationship(
+        "WorkflowStepORM",
+        back_populates="workflow_run",
+        lazy="selectin",
+        order_by="WorkflowStepORM.started_at",
+    )
+