fix: add file type check

frontend/src/app-components/attachment/AttachmentUploader.tsx

@@ -99,6 +99,17 @@ const AttachmentUploader: FC<FileUploadProps> = ({
       const file = event.target.files.item(0);
 
       if (file) {
+        const acceptedTypes = accept.split(',');
+        const isValidType = acceptedTypes.some((type) =>
+          file.type === type || file.name.endsWith(type.replace('.*', ''))
+        );
+
+        if (!isValidType) {
+          toast.error(t("message.invalid_file_type"));
+          
+return;
+        }
+
         uploadAttachment(file);
       }
     }

frontend/src/i18n/en/translation.json

@@ -104,7 +104,8 @@
     "title_length_exceeded": "You have reached the maximum length",
     "no_label_found": "No label found",
     "code_is_required": "Language code is required",
-    "text_is_required": "Text is required"
+    "text_is_required": "Text is required",
+    "invalid_file_type": "Invalid file type"
   },
   "menu": {
     "terms": "Terms of Use",

frontend/src/i18n/fr/translation.json

@@ -104,7 +104,8 @@
     "title_length_exceeded": "Vous avez atteint la longueur maximale",
     "no_label_found": "Aucune étiquette trouvée",
     "code_is_required": "Le code est requis",
-    "text_is_required": "Texte requis"
+    "text_is_required": "Texte requis",
+    "invalid_file_type": "Type de fichier invalide"
   },
   "menu": {
     "terms": "Conditions d'utilisation",