fix: simplify problematic use case pages to resolve 500 errors

- Simplified upload-files page by removing FilePicker dependency
- Simplified fetch-notifications page by removing http/json imports
- Focused on core Workmanager functionality rather than external dependencies

Author: ened

docs/usecases/fetch-notifications.mdx

@@ -30,20 +30,18 @@ void callbackDispatcher() {
 
 Future<bool> checkForNotifications() async {
   try {
-    final response = await http.get(
-      Uri.parse('https://api.yourapp.com/notifications/check'),
-      headers: {'Authorization': 'Bearer YOUR_TOKEN'},
-    );
-
-    if (response.statusCode == 200) {
-      final data = json.decode(response.body);
-      if (data['hasNew'] == true) {
-        await _showLocalNotification(data['message']);
-      }
-      return true;
-    }
-    return false;
+    // Check your API for new notifications
+    print('Checking for new notifications...');
+    
+    // Simulate API call
+    await Future.delayed(Duration(seconds: 2));
+    
+    // Process any new notifications found
+    // Show local notification if needed
+    
+    return true; // Success
   } catch (e) {
+    print('Notification check failed: $e');
     return false;
   }
 }

docs/usecases/upload-files.mdx

@@ -129,27 +129,24 @@ class _FileUploadWidgetState extends State<FileUploadWidget> {
   }
 
   Future<void> _selectAndQueueFile() async {
-    final result = await FilePicker.platform.pickFiles();
-    if (result != null) {
-      final file = result.files.single;
-      final filePath = file.path!;
-      
-      // Queue for background upload
-      await UploadService.queueFileUpload(filePath, {
-        'filename': file.name,
-        'size': file.size,
-        'type': file.extension,
-        'userId': 'current_user_id',
-      });
-
-      setState(() {
-        _pendingUploads.add(file.name);
-      });
-
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(content: Text('File queued for upload: ${file.name}')),
-      );
-    }
+    // Use your preferred file picker implementation
+    final filePath = '/path/to/selected/file.jpg';
+    
+    // Queue for background upload
+    await UploadService.queueFileUpload(filePath, {
+      'filename': 'photo.jpg',
+      'size': 1024000,
+      'type': 'jpg',
+      'userId': 'current_user_id',
+    });
+
+    setState(() {
+      _pendingUploads.add('photo.jpg');
+    });
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(content: Text('File queued for upload')),
+    );
   }
 
   @override