Copilot review follow-up: Improve GPS resilience code clarity

Author: Tory9

src/Vehicle/FactGroups/VehicleGPSAggregateFactGroup.cc

@@ -46,7 +46,7 @@ VehicleGPSAggregateFactGroup::VehicleGPSAggregateFactGroup(QObject *parent)
     _isStaleFact.setRawValue(true);
 
     _staleTimer.setSingleShot(true);
-    _staleTimer.setInterval(5000);
+    _staleTimer.setInterval(GNSS_INTEGRITY_STALE_TIMEOUT_MS);
     connect(&_staleTimer, &QTimer::timeout, this, &VehicleGPSAggregateFactGroup::_onStaleTimeout);
 }
 

src/Vehicle/FactGroups/VehicleGPSAggregateFactGroup.h

@@ -40,6 +40,8 @@ private slots:
     void _onStaleTimeout();
 
 private:
+    static constexpr int GNSS_INTEGRITY_STALE_TIMEOUT_MS = 5000;
+
     static int  _mergeWorst(int a, int b);
     static int  _mergeAuthentication(int a, int b);
     static int  _valueOrInvalid(Fact* fact);