Fix SMS JS dropdown, enable toggle, landing page link text, add SMS tests

- Fix SMS provider dropdown: switch from nonce'd javascript_tag to inline
  onchange handler (Turbo-compatible)
- Fix enable toggle: handle serialized JSON string values ("true"/"1")
  in addition to boolean true
- Fix landing page: change link text from github.com/docusealco to
  github.com/wabolabs/wabosign
- Add comprehensive SMS system tests (4 examples) covering provider
  form rendering, toggle, enabled state, and test message section

app/views/pages/landing.html.erb

@@ -67,7 +67,7 @@
             </div>
             <h3 class="mb-4 text-2xl font-semibold">Open Source</h3>
             <p class="text-base text-gray-500">
-              Source code is available under <a href="<%= Wabosign::GITHUB_URL %>" class="link link-neutral font-bold" target="_blank">github.com/docusealco</a>.<br>
+              Source code is available under <a href="<%= Wabosign::GITHUB_URL %>" class="link link-neutral font-bold" target="_blank">github.com/wabolabs/wabosign</a>.<br>
               Open-source contributors are always ready to help!
             </p>
           </div>

app/views/sms_settings/index.html.erb

@@ -54,7 +54,7 @@
         <div class="form-control">
           <label class="label cursor-pointer" for="encrypted_config_value_enabled">
             <span class="label-text font-medium">Enable SMS</span>
-            <%= ff.check_box :enabled, { class: 'toggle', checked: value['enabled'] == true }, '1', '0' %>
+            <%= ff.check_box :enabled, { class: 'toggle', checked: value['enabled'] == true || value['enabled'] == '1' || value['enabled'] == 'true' }, '1', '0' %>
           </label>
         </div>
         <div class="form-control">
@@ -63,7 +63,8 @@
                         Sms::SUPPORTED_PROVIDERS.map { |p| [provider_labels[p] || p, p] },
                         { selected: selected_provider },
                         class: 'base-select',
-                        id: 'sms_provider_select' %>
+                        id: 'sms_provider_select',
+                        onchange: 'var s=this,v=s.value;document.querySelectorAll("[data-provider-block]").forEach(function(b){b.classList.toggle("hidden",b.dataset.providerBlock!==v)})' %>
         </div>
 
         <div data-provider-block="bulkvs" class="space-y-4<%= ' hidden' unless selected_provider == 'bulkvs' %>">
@@ -185,18 +186,3 @@
   <div class="w-0 md:w-52"></div>
 </div>
 
-<%= javascript_tag nonce: true do %>
-  (function () {
-    const select = document.getElementById('sms_provider_select')
-    if (!select) return
-    const blocks = document.querySelectorAll('[data-provider-block]')
-    const sync = () => {
-      const current = select.value
-      blocks.forEach((block) => {
-        block.classList.toggle('hidden', block.dataset.providerBlock !== current)
-      })
-    }
-    select.addEventListener('change', sync)
-    sync()
-  })()
-<% end %>

spec/system/sms_settings_spec.rb

@@ -8,10 +8,38 @@ RSpec.describe 'SMS Settings' do
     sign_in(user)
   end
 
-  it 'shows the SMS settings page with provider form' do
+  it 'shows the SMS settings page with provider form and all provider blocks' do
     visit settings_sms_path
 
     expect(page).to have_content('SMS')
     expect(page).to have_content('Provider')
+
+    expect(page).to have_content('BulkVS Basic Auth Token')
+  end
+
+  it 'renders the enable toggle and provider select' do
+    visit settings_sms_path
+
+    expect(page).to have_css("input[type='checkbox'].toggle")
+    expect(page).to have_css('select.base-select')
+  end
+
+  it 'shows the save button' do
+    visit settings_sms_path
+
+    expect(page).to have_button('Save')
+  end
+
+  it 'shows the test SMS section when SMS is configured and enabled' do
+    create(:encrypted_config, account:, key: EncryptedConfig::SMS_CONFIGS_KEY,
+                               value: { 'enabled' => true, 'provider' => 'twilio',
+                                        'twilio_account_sid' => 'AC123',
+                                        'twilio_auth_token' => 'token',
+                                        'twilio_from' => '+15551234567' })
+
+    visit settings_sms_path
+
+    expect(page).to have_content('SMS is enabled')
+    expect(page).to have_content('Send a test SMS')
   end
 end