Update workflow feature with codex

web/types.ts

@@ -91,13 +91,26 @@ export interface Workflow {
   globalPrompt?: string;
 }
 
+export type WorkflowNodeType = 'start' | 'assistant' | 'tool' | 'human_transfer' | 'end' | 'conversation' | 'human';
+
+export interface WorkflowCondition {
+  type: 'always' | 'contains' | 'equals' | 'regex' | 'llm' | 'default';
+  source?: 'user' | 'assistant';
+  value?: string;
+  values?: string[];
+  prompt?: string;
+}
+
 export interface WorkflowNode {
+  id?: string;
   name: string;
-  type: 'conversation' | 'tool' | 'human' | 'end';
+  type: WorkflowNodeType;
   isStart?: boolean;
   metadata: {
     position: { x: number; y: number };
   };
+  assistantId?: string;
+  assistant?: Record<string, any>;
   prompt?: string;
   messagePlan?: {
     firstMessage?: string;
@@ -125,9 +138,14 @@ export interface WorkflowNode {
 }
 
 export interface WorkflowEdge {
+  id?: string;
+  fromNodeId?: string;
+  toNodeId?: string;
   from: string;
   to: string;
   label?: string;
+  condition?: WorkflowCondition;
+  priority?: number;
 }
 
 export enum TabValue {