Restore AI workflow design nodes

backend-fastapi/online_dev/page_manager/model.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+页面管理数据模型
+"""
+from sqlalchemy import Column, String, Text, Integer, JSON
+
+from app.base_model import BaseModel
+
+
+class PageMeta(BaseModel):
+    """页面元数据"""
+    __tablename__ = "page_meta"
+
+    # 所属应用（逻辑外键关联 core_application）
+    application_id = Column(String(21), nullable=True, index=True, comment="所属应用ID")
+
+    name = Column(String(100), nullable=False, comment="页面名称")
+    code = Column(String(100), unique=True, nullable=False, comment="页面编码")
+    category = Column(String(50), default="", comment="分类")
+    description = Column(Text, default="", comment="描述")
+    status = Column(String(20), default="draft", index=True, comment="状态: draft/published")
+    version = Column(Integer, default=1, comment="版本号")
+
+    # 页面配置（存储 dashboard-design 的配置）
+    page_config = Column(JSON, default=dict, comment="页面设计配置")