feat: add recharge workflow models and schema statuses

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

backend/app/api/bx/workflow.py

@@ -67,7 +67,16 @@ def create_workflow(
     nodes_data = data.pop("nodes", []) or []
     workflow = WorkflowService.create(db, data, user=user)
     if nodes_data:
-        WorkflowService.save_nodes(db, workflow.id, nodes_data, user=user)
+        try:
+            WorkflowService.save_nodes(db, workflow.id, nodes_data, user=user)
+        except ValueError as exc:
+            db.rollback()
+            code = (
+                status.HTTP_400_BAD_REQUEST
+                if "发放登记" in str(exc)
+                else status.HTTP_404_NOT_FOUND
+            )
+            raise HTTPException(status_code=code, detail=str(exc)) from exc
     db.commit()
     db.refresh(workflow)
     return ApiResponse(data=WorkflowDefOut.model_validate(workflow))
@@ -87,7 +96,16 @@ def update_workflow(
     if not workflow:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="工作流不存在")
     if nodes_data is not None:
-        WorkflowService.save_nodes(db, workflow_id, nodes_data, user=user)
+        try:
+            WorkflowService.save_nodes(db, workflow_id, nodes_data, user=user)
+        except ValueError as exc:
+            db.rollback()
+            code = (
+                status.HTTP_400_BAD_REQUEST
+                if "发放登记" in str(exc)
+                else status.HTTP_404_NOT_FOUND
+            )
+            raise HTTPException(status_code=code, detail=str(exc)) from exc
     db.commit()
     db.refresh(workflow)
     return ApiResponse(data=WorkflowDefOut.model_validate(workflow))
@@ -106,7 +124,12 @@ def save_workflow_nodes(
         WorkflowService.save_nodes(db, workflow_id, nodes_data, user=user)
     except ValueError as exc:
         db.rollback()
-        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=str(exc)) from exc
+        code = (
+            status.HTTP_400_BAD_REQUEST
+            if "发放登记" in str(exc)
+            else status.HTTP_404_NOT_FOUND
+        )
+        raise HTTPException(status_code=code, detail=str(exc)) from exc
     workflow = WorkflowService.get_by_id(db, workflow_id, tenant_no, user=user)
     if not workflow:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="工作流不存在")