diff --git a/packages/admin-client/vite.config.ts b/packages/admin-client/vite.config.ts
index ea5f77e..5e16806 100644
--- a/packages/admin-client/vite.config.ts
+++ b/packages/admin-client/vite.config.ts
@@ -16,5 +16,20 @@ export default defineConfig({
   build: {
     outDir: 'dist',
     sourcemap: true,
+    chunkSizeWarningLimit: 1100, // antd is ~1MB, this is expected
+    rollupOptions: {
+      output: {
+        manualChunks: {
+          // React core
+          'vendor-react': ['react', 'react-dom', 'react-router-dom'],
+          // Ant Design UI library
+          'vendor-antd': ['antd', '@ant-design/icons'],
+          // Charts
+          'vendor-charts': ['recharts'],
+          // Data fetching & state
+          'vendor-data': ['@tanstack/react-query', 'axios', 'zustand'],
+        },
+      },
+    },
   },
 });
diff --git a/packages/services/conversation-service/src/adapters/inbound/conversation.controller.ts b/packages/services/conversation-service/src/adapters/inbound/conversation.controller.ts
index 8081fdf..50ff3c9 100644
--- a/packages/services/conversation-service/src/adapters/inbound/conversation.controller.ts
+++ b/packages/services/conversation-service/src/adapters/inbound/conversation.controller.ts
@@ -16,6 +16,21 @@ import { CreateConversationDto, SendMessageDto } from '../../application/dtos/co
 export class ConversationController {
   constructor(private conversationService: ConversationService) {}
 
+  /**
+   * Extract client IP from headers (supports proxies)
+   */
+  private extractClientIp(
+    xForwardedFor?: string,
+    xRealIp?: string,
+  ): string | undefined {
+    // X-Forwarded-For can contain multiple IPs, take the first one (original client)
+    if (xForwardedFor) {
+      const ips = xForwardedFor.split(',').map((ip) => ip.trim());
+      return ips[0] || undefined;
+    }
+    return xRealIp || undefined;
+  }
+
   /**
    * Create a new conversation
    */
@@ -23,11 +38,24 @@ export class ConversationController {
   @HttpCode(HttpStatus.CREATED)
   async createConversation(
     @Headers('x-user-id') userId: string,
+    @Headers('x-forwarded-for') xForwardedFor: string,
+    @Headers('x-real-ip') xRealIp: string,
+    @Headers('user-agent') userAgent: string,
     @Body() dto: CreateConversationDto,
   ) {
+    // Build deviceInfo from headers and body
+    const clientIp = this.extractClientIp(xForwardedFor, xRealIp);
+    const deviceInfo = {
+      ip: clientIp || dto.deviceInfo?.ip,
+      userAgent: userAgent || dto.deviceInfo?.userAgent,
+      fingerprint: dto.deviceInfo?.fingerprint,
+      region: dto.deviceInfo?.region,
+    };
+
     const conversation = await this.conversationService.createConversation({
       userId,
       title: dto.title,
+      deviceInfo,
     });
 
     return {
diff --git a/packages/services/conversation-service/src/application/dtos/conversation.dto.ts b/packages/services/conversation-service/src/application/dtos/conversation.dto.ts
index de91308..9116cbd 100644
--- a/packages/services/conversation-service/src/application/dtos/conversation.dto.ts
+++ b/packages/services/conversation-service/src/application/dtos/conversation.dto.ts
@@ -1,10 +1,33 @@
 import { IsOptional, IsString, IsNotEmpty, IsArray, ValidateNested } from 'class-validator';
 import { Type } from 'class-transformer';
 
+export class DeviceInfoDto {
+  @IsOptional()
+  @IsString()
+  ip?: string;
+
+  @IsOptional()
+  @IsString()
+  userAgent?: string;
+
+  @IsOptional()
+  @IsString()
+  fingerprint?: string;
+
+  @IsOptional()
+  @IsString()
+  region?: string;
+}
+
 export class CreateConversationDto {
   @IsOptional()
   @IsString()
   title?: string;
+
+  @IsOptional()
+  @ValidateNested()
+  @Type(() => DeviceInfoDto)
+  deviceInfo?: DeviceInfoDto;
 }
 
 export class FileAttachmentDto {
diff --git a/packages/services/conversation-service/src/application/services/conversation.service.ts b/packages/services/conversation-service/src/application/services/conversation.service.ts
index d391843..6d490f5 100644
--- a/packages/services/conversation-service/src/application/services/conversation.service.ts
+++ b/packages/services/conversation-service/src/application/services/conversation.service.ts
@@ -3,6 +3,7 @@ import { v4 as uuidv4 } from 'uuid';
 import {
   ConversationEntity,
   ConversationStatus,
+  DeviceInfo,
 } from '../../domain/entities/conversation.entity';
 import {
   MessageEntity,
@@ -26,6 +27,7 @@ import {
 export interface CreateConversationParams {
   userId: string;
   title?: string;
+  deviceInfo?: DeviceInfo;
 }
 
 export interface FileAttachment {
@@ -63,6 +65,7 @@ export class ConversationService {
       id: uuidv4(),
       userId: params.userId,
       title: params.title || '新对话',
+      deviceInfo: params.deviceInfo,
     });
 
     return this.conversationRepo.save(conversation);