Improve invitation UI and fix access removal

- Move role selector (Caretaker/Guardian) above email input in Access screen
- Remove "(view only)" suffix from Caretaker role in email templates
- Remove "expires in 7 days" text from invitation emails
- Remove expires_at field from invitation creation (invitations never expire)
- Fix deletion of accepted invitations (now also removes user_access record)
- Add favicon to accept-invite.html page

app/(tabs)/beneficiaries/[id]/share.tsx

@@ -324,32 +324,7 @@ export default function ShareAccessScreen() {
           <View style={styles.section}>
             <Text style={styles.sectionTitle}>Invite Someone</Text>
 
-            <View style={styles.inputRow}>
-              <TextInput
-                style={styles.input}
-                placeholder="Email address"
-                placeholderTextColor={AppColors.textMuted}
-                value={email}
-                onChangeText={setEmail}
-                autoCapitalize="none"
-                autoCorrect={false}
-                keyboardType="email-address"
-                editable={!isLoading}
-              />
-              <TouchableOpacity
-                style={[styles.sendButton, isLoading && styles.sendButtonDisabled]}
-                onPress={handleSendInvite}
-                disabled={isLoading}
-              >
-                {isLoading ? (
-                  <ActivityIndicator size="small" color={AppColors.white} />
-                ) : (
-                  <Ionicons name="send" size={18} color={AppColors.white} />
-                )}
-              </TouchableOpacity>
-            </View>
-
-            {/* Role Toggle */}
+            {/* Role Toggle - above email */}
             <View style={styles.roleToggle}>
               <TouchableOpacity
                 style={[styles.roleButton, role === 'caretaker' && styles.roleButtonActive]}
@@ -374,6 +349,31 @@ export default function ShareAccessScreen() {
                 ? 'Can view activity and chat with Julia'
                 : 'Full access: edit info, manage subscription'}
             </Text>
+
+            <View style={[styles.inputRow, { marginTop: Spacing.md }]}>
+              <TextInput
+                style={styles.input}
+                placeholder="Email address"
+                placeholderTextColor={AppColors.textMuted}
+                value={email}
+                onChangeText={setEmail}
+                autoCapitalize="none"
+                autoCorrect={false}
+                keyboardType="email-address"
+                editable={!isLoading}
+              />
+              <TouchableOpacity
+                style={[styles.sendButton, isLoading && styles.sendButtonDisabled]}
+                onPress={handleSendInvite}
+                disabled={isLoading}
+              >
+                {isLoading ? (
+                  <ActivityIndicator size="small" color={AppColors.white} />
+                ) : (
+                  <Ionicons name="send" size={18} color={AppColors.white} />
+                )}
+              </TouchableOpacity>
+            </View>
           </View>
 
           {/* People with Access */}

backend/src/routes/invitations.js

@@ -310,9 +310,7 @@ router.post('/', async (req, res) => {
       attempts++;
     }
 
-    // Create invitation (expires in 7 days)
-    const expiresAt = new Date(Date.now() + 7 * 24 * 60 * 60 * 1000);
-
+    // Create invitation (no expiry)
     const { data: invitation, error } = await supabase
       .from('invitations')
       .insert({
@@ -321,8 +319,7 @@ router.post('/', async (req, res) => {
         token: inviteToken,
         role: role,
         email: email?.toLowerCase() || null,
-        label: label || null,
-        expires_at: expiresAt.toISOString()
+        label: label || null
       })
       .select()
       .single();
@@ -690,8 +687,13 @@ router.delete('/:id', async (req, res) => {
       return res.status(404).json({ error: 'Invitation not found' });
     }
 
-    if (invitation.accepted_at) {
-      return res.status(400).json({ error: 'Cannot revoke accepted invitation' });
+    // If invitation was accepted, also remove user_access
+    if (invitation.accepted_by) {
+      await supabase
+        .from('user_access')
+        .delete()
+        .eq('beneficiary_id', invitation.beneficiary_id)
+        .eq('accessor_id', invitation.accepted_by);
     }
 
     // Delete invitation

backend/src/services/email.js

@@ -222,7 +222,7 @@ If you didn't request this code, you can safely ignore this email.
 async function sendInvitationEmail({ email, inviterName, beneficiaryName, role, inviteCode }) {
   const frontendUrl = process.env.FRONTEND_URL || 'https://wellnuo.smartlaunchhub.com';
   const acceptLink = `${frontendUrl}/accept-invite.html?code=${inviteCode}`;
-  const roleText = role === 'guardian' ? 'Guardian (full access)' : 'Caretaker (view only)';
+  const roleText = role === 'guardian' ? 'Guardian' : 'Caretaker';
 
   const htmlContent = `
     <!DOCTYPE html>
@@ -276,9 +276,6 @@ async function sendInvitationEmail({ email, inviterName, beneficiaryName, role,
                     </tr>
                   </table>
 
-                  <p style="margin: 24px 0 0 0; font-size: 13px; color: #999999; text-align: center;">
-                    This invitation expires in 7 days.
-                  </p>
                 </td>
               </tr>
 
@@ -310,8 +307,6 @@ Your invitation code: ${inviteCode}
 
 Accept your invitation: ${acceptLink}
 
-This invitation expires in 7 days.
-
 If you didn't expect this invitation, you can safely ignore this email.
 
 WellNuo - Elderly Care Monitoring

web/accept-invite.html

@@ -4,6 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Accept Invitation - WellNuo</title>
+  <link rel="icon" type="image/png" href="/favicon.png">
   <style>
     * { margin: 0; padding: 0; box-sizing: border-box; }
     body {