Add agent_type to AgentMessage and related logic

Introduces AgentMessageType enum and adds agent_type field to AgentMessageData and related parsing logic. Updates affected components and services to support distinguishing between human and AI agents.

Author: Fr4nc3

src/frontend/src/components/content/streaming/StreamingAgentMessage.tsx

@@ -3,9 +3,6 @@ import ReactMarkdown from "react-markdown";
 import remarkGfm from "remark-gfm";
 import rehypePrism from "rehype-prism";
 
-interface StreamingAgentMessageProps {
-  agentMessages: AgentMessageData[];
-}
 
 const StreamingAgentMessage = (agentMessages: AgentMessageData[]) => {
   if (!agentMessages?.length) return null;

src/frontend/src/models/agentMessage.tsx

@@ -1,4 +1,6 @@
+import { Agent } from 'http';
 import { BaseModel } from './plan';
+import { AgentMessageType, AgentType } from './enums';
 
 /**
  * Represents a message from an agent
@@ -20,6 +22,7 @@ export interface AgentMessage extends BaseModel {
 
 export interface AgentMessageData {
     agent: string;
+    agent_type: AgentMessageType;
     timestamp: number;
     steps: any[];       // intentionally always empty
     next_steps: [];  // intentionally always empty

src/frontend/src/models/enums.tsx

@@ -250,4 +250,9 @@ export enum WebsocketMessageType {
     USER_CLARIFICATION_REQUEST = "user_clarification_request",
     USER_CLARIFICATION_RESPONSE = "user_clarification_response",
     FINAL_RESULT_MESSAGE = "final_result_message"
+}
+
+export enum AgentMessageType {
+    HUMAN_AGENT = "Human_Agent",
+    AI_AGENT = "AI_Agent",
 }

src/frontend/src/services/PlanDataService.tsx

@@ -7,7 +7,8 @@ import {
   MPlanData,
   StepStatus,
   WebsocketMessageType,
-  ParsedUserClarification
+  ParsedUserClarification,
+  AgentMessageType
 } from "@/models";
 import { apiService } from "@/api";
 
@@ -360,6 +361,7 @@ export class PlanDataService {
    */
   static parseAgentMessage(rawData: any): {
     agent: string;
+    agent_type: AgentMessageType;
     timestamp: number | null;
     steps: Array<{
       title: string;
@@ -461,6 +463,7 @@ export class PlanDataService {
 
       return {
         agent,
+        agent_type: AgentMessageType.AI_AGENT,
         timestamp,
         steps,
         next_steps: nextSteps,