feat(flows): 新增流程编辑器基础功能与相关组件

feat(backend): 添加流程模型与服务支持
feat(frontend): 实现流程编辑器UI与交互
feat(assets): 添加流程节点图标资源
feat(plugins): 实现上下文菜单和运行时插件
feat(components): 新增基础节点和侧边栏组件
feat(routes): 添加流程相关路由配置
feat(models): 创建流程和运行日志数据模型
feat(services): 实现流程服务层逻辑
feat(migration): 添加流程相关数据库迁移
feat(config): 更新前端配置支持流程编辑器
feat(utils): 增强axios错误处理和工具函数

frontend/src/flows/typings/index.ts

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+/**
+ * Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+ * SPDX-License-Identifier: MIT
+ */
+
+export * from './node';
+export * from './json-schema';

frontend/src/flows/typings/json-schema.ts

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+/**
+ * Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+ * SPDX-License-Identifier: MIT
+ */
+
+import type { IJsonSchema, IBasicJsonSchema } from '@flowgram.ai/form-materials';
+
+export type BasicType = IBasicJsonSchema;
+export type JsonSchema = IJsonSchema;

frontend/src/flows/typings/node.ts

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+/**
+ * Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
+ * SPDX-License-Identifier: MIT
+ */
+
+import {
+  WorkflowNodeJSON as FlowNodeJSONDefault,
+  WorkflowNodeRegistry as FlowNodeRegistryDefault,
+  FreeLayoutPluginContext,
+  FlowNodeEntity,
+  type WorkflowEdgeJSON,
+  WorkflowNodeMeta,
+} from '@flowgram.ai/free-layout-editor';
+import { IFlowValue } from '@flowgram.ai/form-materials';
+
+import { type JsonSchema } from './json-schema';
+import { WorkflowNodeType } from '../nodes';
+
+/**
+ * You can customize the data of the node, and here you can use JsonSchema to define the input and output of the node
+ * 你可以自定义节点的 data 业务数据, 这里演示 通过 JsonSchema 来定义节点的输入/输出
+ */
+export interface FlowNodeJSON extends FlowNodeJSONDefault {
+  data: {
+    /**
+     * Node title
+     */
+    title?: string;
+    /**
+     * Inputs data values
+     */
+    inputsValues?: Record<string, IFlowValue>;
+    /**
+     * Define the inputs data of the node by JsonSchema
+     */
+    inputs?: JsonSchema;
+    /**
+     * Define the outputs data of the node by JsonSchema
+     */
+    outputs?: JsonSchema;
+    /**
+     * Rest properties
+     */
+    [key: string]: any;
+  };
+}
+
+/**
+ * You can customize your own node meta
+ * 你可以自定义节点的meta
+ */
+export interface FlowNodeMeta extends WorkflowNodeMeta {
+  sidebarDisabled?: boolean;
+  nodePanelHidden?: boolean;
+  wrapperStyle?: React.CSSProperties;
+  onlyInContainer?: WorkflowNodeType;
+}
+
+/**
+ * You can customize your own node registry
+ * 你可以自定义节点的注册器
+ */
+export interface FlowNodeRegistry extends FlowNodeRegistryDefault {
+  meta: FlowNodeMeta;
+  info?: {
+    icon: string;
+    description: string;
+  };
+  canAdd?: (ctx: FreeLayoutPluginContext) => boolean;
+  canDelete?: (ctx: FreeLayoutPluginContext, from: FlowNodeEntity) => boolean;
+  onAdd?: (ctx: FreeLayoutPluginContext) => FlowNodeJSON;
+}
+
+export interface FlowDocumentJSON {
+  nodes: FlowNodeJSON[];
+  edges: WorkflowEdgeJSON[];
+}