bug fixes

src/nodeClass.js

@@ -228,7 +228,7 @@ class nodeClass {
         case 'q_in': {
           // payload can be number or { value, unit, timestamp }
           const val = Number(msg.payload);
-          const unit = msg?.unit || 'l/s';
+          const unit = msg?.unit;
           const ts = msg?.timestamp || Date.now();
           this.source.setManualInflow(val, ts, unit);
           break;