Add chat web app for real-time agent conversations

frontend/src/api/simulation.js

@@ -185,3 +185,11 @@ export const getSimulationHistory = (limit = 20) => {
   return service.get('/api/simulation/history', { params: { limit } })
 }
 
+/**
+ * 采访单个 Agent（聊天）
+ * @param {Object} data - { simulation_id, agent_id, prompt, platform?, timeout? }
+ */
+export const interviewAgent = (data) => {
+  return service.post('/api/simulation/interview', data)
+}
+

frontend/src/components/Step3Simulation.vue

@@ -91,7 +91,14 @@
       </div>
 
       <div class="action-controls">
-        <button 
+        <button
+          class="action-btn chat-btn"
+          :disabled="phase !== 2"
+          @click="router.push({ name: 'Chat', params: { simulationId: props.simulationId } })"
+        >
+          💬 Chat with Agents
+        </button>
+        <button
           class="action-btn primary"
           :disabled="phase !== 2 || isGeneratingReport"
           @click="handleNextStep"
@@ -871,6 +878,14 @@ onUnmounted(() => {
   align-items: center;
 }
 
+/* Action Controls */
+.action-controls {
+  display: flex;
+  gap: 10px;
+  align-items: center;
+  flex-wrap: wrap;
+}
+
 /* Action Button */
 .action-btn {
   display: inline-flex;
@@ -896,6 +911,16 @@ onUnmounted(() => {
   background: #333;
 }
 
+.action-btn.chat-btn {
+  background: #fff;
+  color: #000;
+  border: 1.5px solid #000;
+}
+
+.action-btn.chat-btn:hover:not(:disabled) {
+  background: #f5f5f5;
+}
+
 .action-btn:disabled {
   opacity: 0.3;
   cursor: not-allowed;

frontend/src/router/index.js

@@ -5,6 +5,7 @@ import SimulationView from '../views/SimulationView.vue'
 import SimulationRunView from '../views/SimulationRunView.vue'
 import ReportView from '../views/ReportView.vue'
 import InteractionView from '../views/InteractionView.vue'
+import ChatView from '../views/ChatView.vue'
 
 const routes = [
   {
@@ -41,6 +42,12 @@ const routes = [
     name: 'Interaction',
     component: InteractionView,
     props: true
+  },
+  {
+    path: '/chat/:simulationId',
+    name: 'Chat',
+    component: ChatView,
+    props: true
   }
 ]