Improve invitation acceptance flow

- Add GET /api/invitations/info/:code endpoint to fetch role before accepting
- Show role and permissions on accept page BEFORE clicking Accept
- Simplify success page: remove permissions list, add link to wellnuo.com
- Minimalist design: light header background, logo only

backend/src/routes/invitations.js

@@ -23,6 +23,56 @@ function authMiddleware(req, res, next) {
   }
 }
 
+/**
+ * PUBLIC: Get invitation info without auth
+ * GET /api/invitations/info/:code
+ * Used to show role info before accepting
+ */
+router.get('/info/:code', async (req, res) => {
+  try {
+    const code = req.params.code;
+
+    if (!code) {
+      return res.status(400).json({ error: 'Code is required' });
+    }
+
+    // Find invitation by code
+    const formattedCode = code.toUpperCase().replace(/-/g, '').replace(/(.{3})/g, '$1-').slice(0, 11);
+
+    let { data: invitation } = await supabase
+      .from('invitations')
+      .select('role, accepted_at')
+      .eq('token', formattedCode)
+      .single();
+
+    // Try without formatting
+    if (!invitation) {
+      const { data: inv2 } = await supabase
+        .from('invitations')
+        .select('role, accepted_at')
+        .eq('token', code.toUpperCase())
+        .single();
+      invitation = inv2;
+    }
+
+    if (!invitation) {
+      return res.status(404).json({ error: 'Invitation not found' });
+    }
+
+    if (invitation.accepted_at) {
+      return res.status(400).json({ error: 'This invitation has already been accepted' });
+    }
+
+    res.json({
+      role: invitation.role
+    });
+
+  } catch (error) {
+    console.error('[INVITE] Get info error:', error);
+    res.status(500).json({ error: error.message });
+  }
+});
+
 /**
  * PUBLIC: Accept invitation without auth
  * POST /api/invitations/accept-public

web/accept-invite.html

@@ -153,8 +153,24 @@
     </div>
 
     <div class="content">
+      <!-- Loading Section -->
+      <div id="loadingSection">
+        <p style="color: #666;">Loading invitation...</p>
+      </div>
+
       <!-- Accept Section -->
-      <div id="acceptSection">
+      <div id="acceptSection" style="display: none;">
+        <div id="roleBadgeAccept" class="role-badge"></div>
+
+        <p class="success-text">
+          You've been invited to monitor a family member through WellNuo.
+        </p>
+
+        <div id="permissionsBlockAccept">
+          <div class="permissions-title">With this role you will be able to:</div>
+          <ul class="permissions-list" id="permissionsListAccept"></ul>
+        </div>
+
         <div id="errorMessage" class="error-message"></div>
 
         <button class="btn btn-primary" id="acceptBtn" onclick="acceptInvitation()">
@@ -171,23 +187,17 @@
         </div>
         <h2 class="success-title">You're all set!</h2>
 
-        <div id="roleBadge" class="role-badge"></div>
-
         <p class="success-text">
-          You have been granted access to monitor a family member through WellNuo.
+          Your invitation has been accepted. Download the WellNuo app to get started.
         </p>
 
-        <div id="permissionsBlock">
-          <div class="permissions-title">With your role you can:</div>
-          <ul class="permissions-list" id="permissionsList"></ul>
-        </div>
+        <a href="https://wellnuo.com" target="_blank" class="btn btn-primary" style="display: block; text-decoration: none; margin-top: 20px;">
+          Go to WellNuo.com
+        </a>
 
-        <div class="next-step">
-          <div class="next-step-title">What's next?</div>
-          <div class="next-step-text">
-            Download the WellNuo app and sign in with the email address this invitation was sent to. You'll see the beneficiary in your dashboard.
-          </div>
-        </div>
+        <p style="margin-top: 16px; font-size: 13px; color: #666;">
+          Sign in with the email address this invitation was sent to.
+        </p>
       </div>
     </div>
   </div>
@@ -199,38 +209,29 @@
     const params = new URLSearchParams(window.location.search);
     const inviteCode = params.get('code') || '';
 
-    // Show error if no code
+    // Load invitation info on page load
+    async function loadInvitationInfo() {
+      const loadingSection = document.getElementById('loadingSection');
+      const acceptSection = document.getElementById('acceptSection');
+      const errorMessage = document.getElementById('errorMessage');
+
       if (!inviteCode) {
-      document.getElementById('errorMessage').textContent = 'Invalid invitation link.';
-      document.getElementById('errorMessage').style.display = 'block';
-      document.getElementById('acceptBtn').disabled = true;
+        loadingSection.innerHTML = '<p style="color: #c00;">Invalid invitation link.</p>';
+        return;
       }
 
-    async function acceptInvitation() {
-      const btn = document.getElementById('acceptBtn');
-      const errorEl = document.getElementById('errorMessage');
-
-      btn.disabled = true;
-      btn.innerHTML = '<span class="loading"></span>Accepting...';
-      errorEl.style.display = 'none';
-
       try {
-        const response = await fetch(`${API_BASE}/invitations/accept-public`, {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({ code: inviteCode })
-        });
-
+        const response = await fetch(`${API_BASE}/invitations/info/${inviteCode}`);
         const data = await response.json();
 
         if (!response.ok) {
-          throw new Error(data.error || 'Failed to accept invitation');
+          throw new Error(data.error || 'Invalid invitation');
         }
 
-        // Show success with role-specific permissions
+        // Show role info before accepting
         const isGuardian = data.role === 'guardian';
-        const roleBadge = document.getElementById('roleBadge');
-        const permissionsList = document.getElementById('permissionsList');
+        const roleBadge = document.getElementById('roleBadgeAccept');
+        const permissionsList = document.getElementById('permissionsListAccept');
 
         if (isGuardian) {
           roleBadge.textContent = 'Guardian';
@@ -254,6 +255,40 @@
           `;
         }
 
+        // Show accept section
+        loadingSection.style.display = 'none';
+        acceptSection.style.display = 'block';
+
+      } catch (error) {
+        loadingSection.innerHTML = `<p style="color: #c00;">${error.message}</p>`;
+      }
+    }
+
+    // Load info on page load
+    loadInvitationInfo();
+
+    async function acceptInvitation() {
+      const btn = document.getElementById('acceptBtn');
+      const errorEl = document.getElementById('errorMessage');
+
+      btn.disabled = true;
+      btn.innerHTML = '<span class="loading"></span>Accepting...';
+      errorEl.style.display = 'none';
+
+      try {
+        const response = await fetch(`${API_BASE}/invitations/accept-public`, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ code: inviteCode })
+        });
+
+        const data = await response.json();
+
+        if (!response.ok) {
+          throw new Error(data.error || 'Failed to accept invitation');
+        }
+
+        // Show success
         document.getElementById('acceptSection').style.display = 'none';
         document.getElementById('successSection').style.display = 'block';