fix(api): use relative baseURL to fix docker deployment API requests

This fixes the issue where the frontend in docker tries to connect to localhost instead of the Vite proxy.

frontend/src/api/index.js

@@ -2,7 +2,7 @@ import axios from 'axios'
 
 // 创建axios实例
 const service = axios.create({
-  baseURL: import.meta.env.VITE_API_BASE_URL || 'http://localhost:5001',
+  baseURL: import.meta.env.VITE_API_BASE_URL || '',
   timeout: 300000, // 5分钟超时（本体生成可能需要较长时间）
   headers: {
     'Content-Type': 'application/json'

frontend/vite.config.js

@@ -6,7 +6,6 @@ export default defineConfig({
   plugins: [vue()],
   server: {
     port: 3000,
-    open: true,
     proxy: {
       '/api': {
         target: 'http://localhost:5001',