Fix file permissions, still

backend/handlers/handle_message_upload.go

@@ -71,6 +71,14 @@ func (store *Store) UploadMessageFile(ctx *gin.Context) {
 	filename := hex.EncodeToString(b) + ext
 
 	uploadDir := "/backend/uploads/"
+	if err := os.MkdirAll(uploadDir, 0755); err != nil {
+		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create upload directory"})
+		return
+	}
+	if err := os.Chmod(uploadDir, 0755); err != nil {
+		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "failed to set directory permissions"})
+		return
+	}
 	dest := filepath.Join(uploadDir, filename)
 	if err := ctx.SaveUploadedFile(file, dest); err != nil {
 		ctx.JSON(http.StatusInternalServerError, gin.H{"error": "failed to save file"})