Phase 7 — User Settings

[lortza]

app/views/users/edit.html.erb — add a section for survey enrollment below existing toggles:

 <h3>Mental Health Tracking</h3>
 <% @available_surveys.each do |survey| %>
   <div class="field">
     <% if current_user.enrolled_in?(survey) %>
       <%= button_to "Disable #{survey.name}",
             survey_enrollment_path(current_user.survey_enrollments.find_by!(survey: survey)),
             method: :delete, class: button_class('danger') %>
     <% else %>
       <%= button_to "Enable #{survey.name}",
             survey_enrollments_path(survey_id: survey.id),
             method: :post, class: button_class('secondary') %>
     <% end %>
   </div>
 <% end %>

UsersController#edit — add @available_surveys = Survey.published to the action.