feat: update all OpenAI/ChatGPT refs + settings dropdown for fixed-value fields

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

frontend/templates/status_dashboard.html

@@ -174,11 +174,11 @@
                       Configure Now
                     </a>
                   {% endif %}
-                {% elif name == "OpenAI" %}
+                {% elif name == "AI Provider" %}
                   {% if provider.configured %}
                     <button
                       class="test-provider-btn inline-flex items-center px-2.5 py-1.5 border border-gray-300 text-xs font-medium rounded text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-indigo-500"
-                      data-provider="openai">
+                      data-provider="ai_provider">
                       Test Connection
                     </button>
                   {% endif %}
@@ -521,8 +521,8 @@ document.addEventListener('DOMContentLoaded', function() {
         endpoint = '/api/onedrive/test-token';
       } else if (provider === 'google_drive') {
         endpoint = '/api/google-drive/test-token';
-      } else if (provider === 'openai') {
-        endpoint = '/api/openai/test';
+      } else if (provider === 'ai_provider') {
+        endpoint = '/api/ai/test';
       } else if (provider === 'azure') {
         endpoint = '/api/azure/test';
       }