🐛 Fix compose sheet

lib/widgets/post/compose_submit_utils.dart

@@ -22,6 +22,23 @@ class ComposeSubmitUtils {
       throw Exception('Already submitting');
     }
 
+    // Don't submit empty posts (no content and no attachments)
+    final hasContent =
+        state.titleController.text.trim().isNotEmpty ||
+        state.descriptionController.text.trim().isNotEmpty ||
+        state.contentController.text.trim().isNotEmpty;
+    final hasAttachments = state.attachments.value.isNotEmpty;
+
+    if (!hasContent && !hasAttachments) {
+      // Show error message if context is mounted
+      if (context.mounted) {
+        ScaffoldMessenger.of(
+          context,
+        ).showSnackBar(SnackBar(content: Text('postContentEmpty')));
+      }
+      throw Exception('Post content is empty'); // Don't submit empty posts
+    }
+
     try {
       state.submitting.value = true;