feat: add recharge workflow models and schema statuses

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

backend/app/models/bx_models.py

@@ -73,6 +73,12 @@ class BxWorkflowNode(Base):
     node_order = Column(Integer, nullable=False, default=0, comment="节点顺序")
     approver_id = Column(String(64), nullable=True, comment="审批人用户ID")
     approver_name = Column(String(64), nullable=True, comment="审批人姓名")
+    action_type = Column(
+        String(20),
+        nullable=False,
+        default="approve",
+        comment="approve-审批 disburse-发放登记",
+    )
     tenant_no = Column(String(64), nullable=False, default="shanxia2.0", comment="租户编号")
     order_num = Column(Integer, nullable=True, comment="排序号(公共)")
     remark = Column(String(512), nullable=True, comment="备注")