feat: 修复登录逻辑

app.js

@@ -57,6 +57,18 @@ App({
         });
     },
 
+    // Force refresh login (e.g. on 401)
+    forceRefreshLogin() {
+        // Reset Promise
+        this.loginPromise = new Promise((resolve, reject) => {
+            this._resolveLogin = resolve;
+            this._rejectLogin = reject;
+        });
+        wx.removeStorageSync('token');
+        this.doLogin();
+        return this.loginPromise;
+    },
+
     // Method for other pages/utils to wait for login
     ensureLogin() {
         // If token exists, resolve immediately