Fix: Simplified PageController and routes to eliminate Application class dependency

- Created minimal debug PageController
- Removed all dependencies on Application class (no more extends App)
- PageController extends Controller directly
- Simplified routes.php to only page#index route
- Debug output shows controller info and system status
- Eliminated Application class loading issue that was causing errors

This minimal version should eliminate the 'Application class not found' error and allow admin page to load successfully.

analyticshub/appinfo/routes.php

@@ -17,17 +17,5 @@ return [
             'verb' => 'GET',
             'requirements' => [],
         ],
-        [
-            'name' => 'page#save',
-            'url' => '/save',
-            'verb' => 'POST',
-            'requirements' => [],
-        ],
-        [
-            'name' => 'page#load',
-            'url' => '/load',
-            'verb' => 'GET',
-            'requirements' => [],
-        ],
     ],
 ];