Implement FastAPI Temporal MVP pipeline

app/domain/models/order.py

@@ -0,0 +1,26 @@
+"""Domain order model."""
+
+from dataclasses import dataclass
+from datetime import datetime
+
+from app.domain.enums import CustomerLevel, OrderStatus, ServiceMode, WorkflowStepName
+
+
+@dataclass(slots=True)
+class Order:
+    """Business representation of an image order."""
+
+    id: int
+    customer_level: CustomerLevel
+    service_mode: ServiceMode
+    status: OrderStatus
+    model_id: int
+    pose_id: int
+    garment_asset_id: int
+    scene_ref_asset_id: int
+    final_asset_id: int | None
+    workflow_id: str | None
+    current_step: WorkflowStepName | None
+    created_at: datetime
+    updated_at: datetime
+