Auto-login single-business users, add switch/add business links

- Skip business selection for users with only one business
- Add Switch Business and Add New Business links in portal sidebar
- Handle returning users switching businesses (token + no business)

portal/index.html

@@ -105,6 +105,18 @@
             <div class="business-status online">Online</div>
           </div>
         </div>
+        <a href="#" class="nav-item" onclick="Portal.switchBusiness(); return false;">
+          <svg class="nav-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+            <path d="M16 3h5v5M8 3H3v5M3 16v5h5M21 16v5h-5M7 12h10"/>
+          </svg>
+          <span>Switch Business</span>
+        </a>
+        <a href="#" class="nav-item" onclick="Portal.addNewBusiness(); return false;">
+          <svg class="nav-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+            <path d="M12 5v14M5 12h14"/>
+          </svg>
+          <span>Add New Business</span>
+        </a>
         <a href="#logout" class="nav-item logout" data-page="logout">
           <svg class="nav-icon" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
             <path d="M9 21H5a2 2 0 01-2-2V5a2 2 0 012-2h4M16 17l5-5-5-5M21 12H9"/>

portal/login.html

@@ -242,13 +242,23 @@
         // Check if already logged in
         const savedToken = localStorage.getItem('payfrit_portal_token');
         const savedBusiness = localStorage.getItem('payfrit_portal_business');
+        const savedUserId = localStorage.getItem('payfrit_portal_userid');
 
         if (savedToken && savedBusiness) {
-          // Verify token is still valid
+          // Already logged in with a business - redirect to portal
           this.verifyAndRedirect(savedToken, savedBusiness);
           return;
         }
 
+        if (savedToken && savedUserId) {
+          // Has token but no business selected (switching businesses)
+          // Skip login form, go directly to business selection
+          this.userToken = savedToken;
+          this.userId = parseInt(savedUserId);
+          this.loadBusinessesAndShow();
+          return;
+        }
+
         // Setup form handlers
         document.getElementById('loginForm').addEventListener('submit', (e) => {
           e.preventDefault();
@@ -256,6 +266,22 @@
         });
       },
 
+      // Load businesses and show selection (for switching businesses)
+      async loadBusinessesAndShow() {
+        await this.loadBusinesses();
+
+        if (this.businesses.length === 0) {
+          // No businesses - go directly to wizard
+          this.startNewRestaurant();
+        } else if (this.businesses.length === 1) {
+          // Single business - auto-login to it
+          this.selectBusinessById(this.businesses[0].BusinessID);
+        } else {
+          // Multiple businesses - show selection
+          this.showStep('business');
+        }
+      },
+
       async verifyAndRedirect(token, businessId) {
         // Save business ID to localStorage and redirect
         localStorage.setItem('payfrit_portal_business', businessId);
@@ -308,8 +334,11 @@
             if (this.businesses.length === 0) {
               // No businesses - go directly to wizard
               this.startNewRestaurant();
+            } else if (this.businesses.length === 1) {
+              // Single business - auto-login to it
+              this.selectBusinessById(this.businesses[0].BusinessID);
             } else {
-              // Show business selection (even if just one, so they can access wizard)
+              // Multiple businesses - show selection
               this.showStep('business');
             }
           } else {

portal/portal.js

@@ -136,6 +136,18 @@ const Portal = {
     window.location.href = BASE_PATH + '/portal/login.html';
   },
 
+  // Switch to a different business (go back to login to select)
+  switchBusiness() {
+    // Clear current business selection but keep token
+    localStorage.removeItem('payfrit_portal_business');
+    window.location.href = BASE_PATH + '/portal/login.html';
+  },
+
+  // Add a new business (go to setup wizard)
+  addNewBusiness() {
+    window.location.href = BASE_PATH + '/portal/setup-wizard.html';
+  },
+
   // Setup navigation
   setupNavigation() {
     document.querySelectorAll('.nav-item[data-page]').forEach(item => {