Add per-resource email targets to resource form

client/src/App.js

@@ -28,6 +28,7 @@ function Dashboard() {
     quiet_hours_end: '',
     cert_expiry_days: 30,
     sla_target: 99.9,
+    email_to: '',
   });
   const [groupData, setGroupData] = useState({ name: '', description: '' });
   const navigate = useNavigate();
@@ -468,6 +469,16 @@ function Dashboard() {
                 />
               </div>
 
+              <div className="form-group">
+                <label>Alert Email Address (Optional)</label>
+                <input
+                  type="email"
+                  placeholder="user@example.com (leave empty to use global setting)"
+                  value={formData.email_to || ''}
+                  onChange={(e) => setFormData({ ...formData, email_to: e.target.value })}
+                />
+              </div>
+
               <div className="form-actions">
                 <button type="button" className="btn" onClick={() => setShowModal(false)}>
                   Cancel