fix update of construction progress

src/Construction/ConstructionHelperPage.cs

@@ -61,6 +61,9 @@ internal class ConstructionHelperPage : IPage {
         if (depot == null) {
             depot = new() { Station = station, Progress = e.ConstructionProgress };
             colony.Depots.Add(depot);
+        } else {
+            depot.Progress = e.ConstructionProgress;
+            tree.RefreshObject(depot, false);
         }
 
         foreach (var resource in e.ResourcesRequired) {

src/Edith.cs

@@ -50,7 +50,6 @@ internal class Edith {
 
     private async Task RunGUILoop() {
         RunState state;
-        bool first = true;
 
         if (window == null) {
             return;