chore: vary visibility of seen content

src/networkstreammodel.cpp

@@ -1,4 +1,6 @@
 #include "networkstreammodel.h"
+#include <QBrush>
+#include <QColor>
 
 NetworkStreamModel::NetworkStreamModel(Data *data, QObject *parent) : QAbstractItemModel(parent), m_data(data)
 {
@@ -142,6 +144,15 @@ QVariant NetworkStreamModel::data(const QModelIndex &index, int role) const
           // Right-align the unseen count
           return static_cast<int>(Qt::AlignRight | Qt::AlignVCenter);
         }
+        else if (role == Qt::ForegroundRole)
+        {
+          // Make streams with no unseen items grey (fully caught up)
+          if (stream.unseenCount == 0)
+          {
+            return QBrush(QColor(128, 128, 128));
+          }
+          // Streams with unseen items use default color
+        }
       }
     }
   }