Implement FastAPI Temporal MVP pipeline

app/api/routers/workflows.py

@@ -0,0 +1,22 @@
+"""Workflow routes."""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.api.schemas.workflow import WorkflowStatusResponse
+from app.application.services.workflow_service import WorkflowService
+from app.infra.db.session import get_db_session
+
+router = APIRouter(prefix="/workflows", tags=["workflows"])
+workflow_service = WorkflowService()
+
+
+@router.get("/{order_id}", response_model=WorkflowStatusResponse)
+async def get_workflow_status(
+    order_id: int,
+    session: AsyncSession = Depends(get_db_session),
+) -> WorkflowStatusResponse:
+    """Fetch persisted workflow status for an order."""
+
+    return await workflow_service.get_workflow_status(session, order_id)
+