feat: support cross-origin deployment with VITE_API_BASE_URL

- Set VITE_API_BASE_URL=https://opinion-api.moreminimore.com for
  frontend-backend split deployment
- Vite proxy also uses API_BACKEND_URL env var as target
- Falls back to same-origin proxy for local dev

.env.example

@@ -69,6 +69,16 @@ LLM_MODEL_NAME=qwen-plus
 ZEP_API_KEY=your_zep_api_key_here
 
 
+# ================================================================
+# Frontend URL 配置
+# ================================================================
+# 前后端分离部署时（如 opinion.moreminimore.com + opinion-api.moreminimore.com），
+# 设置此变量让前端直接请求后端 API 地址。
+# 同源部署或本地开发时无需设置。
+
+VITE_API_BASE_URL=https://opinion-api.moreminimore.com
+
+
 # ================================================================
 # 加速 LLM 配置（可选）
 # ================================================================

frontend/src/api/index.js

@@ -2,6 +2,9 @@ import axios from 'axios'
 import i18n from '../i18n'
 
 // 创建axios实例
+// VITE_API_BASE_URL: set to backend URL for cross-origin deployments
+//   e.g. https://opinion-api.moreminimore.com
+//   Falls back to '' (empty) when using vite proxy (same-origin / local dev)
 const service = axios.create({
   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）

frontend/vite.config.js

@@ -18,9 +18,9 @@ export default defineConfig({
     allowedHosts: true,
     proxy: {
       '/api': {
-        target: 'http://localhost:5001',
+        target: process.env.API_BACKEND_URL || 'http://localhost:5001',
         changeOrigin: true,
-        secure: false
+        secure: true
       }
     }
   }