Add optional 'message' field to alert schema: Enhanced the alert schema in printer.schema.js to include a non-required 'message' field for improved alert detail.

src/schemas/production/printer.schema.js

@@ -17,6 +17,7 @@ const alertSchema = new Schema(
   {
     priority: { type: String, required: true }, // order to show
     type: { type: String, required: true }, // selectFilament, error, info, message,
+    message: { type: String, required: false },
   },
   { timestamps: true, _id: false }
 );