fix(deploy): 更新API代理配置以匹配容器网络

将nginx和vite配置中的API代理地址统一为容器网络中的地址，确保开发和生产环境的一致性

docker/nginx/default.conf

@@ -11,7 +11,7 @@ server {
     }
 
     location /api/ {
-        proxy_pass http://api:8000/;
+        proxy_pass http://api:5050/;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

web/vite.config.js

@@ -14,7 +14,7 @@ export default defineConfig(({ mode }) => {
     server: {
       proxy: {
         '^/api': {
-          target: env.VITE_API_URL || 'http://127.0.0.1:5050',
+          target: env.VITE_API_URL || 'http://api:5050',
           changeOrigin: true,
           rewrite: (path) => path.replace(/^\/api/, '/api')
         }