refactor(store):BUG 524 530 重构 signOut 逻辑

- 移除了 state 中的冗余代码
-优化了 signOut mutation 的逻辑结构
- 使用 Promise 处理异步操作，提高了代码可读性
- 简化了登录页面 URL 的拼接方式

src/utils/store.js

@@ -8,24 +8,17 @@ import extra from "../config.json"
 Vue.use(Vuex)
 
 export default new Vuex.Store({
-  state: {
-  },
+  state: {},
   mutations: {
     signOut(state, flag) {
       const base = extra.base || ""
-      if (flag) {
-        state.user.token = null;
-        state.user.info = {}
+      new Promise(resolve => {
+        flag ? resolve() : axios.delete('/auth/token/logout').then(resolve)
+      }).then(() => {
+        localStorage.removeItem("vuex");
         sessionStorage.clear();
-        location.href = base + '/login' + location.hash;
-      } else {
-        axios.delete('/auth/token/logout').then(() => {
-          state.user.token = null;
-          sessionStorage.clear();
-          state.user.info = {}
-          location.href = base + '/login';
-        });
-      }
+        location.href = [base, '/login', location.hash].join('');
+      })
     },
   },
   getters: {