refactor(http): 重构登录和请求基础URL处理逻辑

移除loginAction的sparkBaseUrl参数，改为通过请求拦截器统一处理
优化设备地址显示逻辑，优先使用非IPv6地址

src/renderer/components/LoginDialog.vue

@@ -16,7 +16,7 @@
               <el-option
                 v-for="device in sparkStore.devices"
                 :key="device.name"
-                :label="`${device.name} (${device.addresses?.[0]}:${device.port})`"
+                :label="`${device.name} (${device.addresses?.find((a) => !a.includes(':')) || device.referer?.address}:${device.port})`"
                 :value="device.name"
               />
             </el-select>
@@ -119,7 +119,7 @@ async function handleLogin() {
       console.log('[Login] spark device:', device);
       console.log('[Login] target url:', url);
 
-      await loginAction({ email: form.value.username, password: form.value.password }, url);
+      await loginAction({ email: form.value.username, password: form.value.password });
       ElMessage.success(`登录成功 | ${url ?? '未选择设备'}`);
       emit('login-success', { username: form.value.username, device });
       visible.value = false;

src/renderer/http/api.js

@@ -6,8 +6,7 @@ import { encryptPassword } from '@/utils/crypto.js';
 export const getHealthAction = () => getAction(url.health);
 
 // 用户登录
-export const loginAction = (data, sparkBaseUrl) =>
-  postAction(url.user.login, { email: data.email, password: encryptPassword(data.password) }, {}, sparkBaseUrl);
+export const loginAction = (data) => postAction(url.user.login, { email: data.email, password: encryptPassword(data.password) });
 
 // 会话
 export const createSessionAction = (data) => postAction(url.session.create, data);

src/renderer/http/index.js

@@ -1,6 +1,7 @@
 import axios from 'axios';
 import { ElMessage } from 'element-plus';
 import { getBaseUrl } from './url.js';
+import { useSparkStore } from '@/stores/spark';
 
 // baseURL 由主进程动态分配端口，通过 getBaseUrl() 运行时获取
 const axiosInstance = axios.create({
@@ -12,9 +13,10 @@ const axiosInstance = axios.create({
   responseType: 'json',
 });
 
-// 每次请求前动态更新 baseURL，确保服务启动后端口变更能被感知
+// 每次请求前动态更新 baseURL：优先用选中的 spark 设备地址，否则回退到 opencode 地址
 axiosInstance.interceptors.request.use((config) => {
-  config.baseURL = getBaseUrl();
+  const sparkStore = useSparkStore();
+  config.baseURL = sparkStore.selectedDeviceUrl || getBaseUrl();
   return config;
 });