Vibe search feature

ZeroSpace/ZeroSpace.MapEditor/Models/MapNode.cs

@@ -27,4 +27,6 @@ public sealed class MapNode
     }
 
     public bool IsSelected { get; set; }
+
+    public bool IsHighlighted { get; set; }
 }

ZeroSpace/ZeroSpace.MapEditor/Views/MapDrawable.cs

@@ -58,11 +58,18 @@ public sealed class MapDrawable : IDrawable
             canvas.FillColor = ColorForKind(node.Doc.Kind);
             canvas.FillCircle(center, radius);
 
+            if (node.IsHighlighted)
+            {
+                canvas.StrokeColor = Color.FromArgb("#FFD700");
+                canvas.StrokeSize = 3;
+                canvas.DrawCircle(center, radius + 4);
+            }
+
             if (node.IsSelected)
             {
                 canvas.StrokeColor = Colors.White;
                 canvas.StrokeSize = 3;
-                canvas.DrawCircle(center, radius + 6);
+                canvas.DrawCircle(center, node.IsHighlighted ? radius + 8 : radius + 6);
             }
         }
     }

ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml

@@ -10,6 +10,11 @@
             <Button Text="+" WidthRequest="44" Clicked="OnZoomInClicked" />
             <Button Text="−" WidthRequest="44" Clicked="OnZoomOutClicked" />
             <Button Text="Reset View" Clicked="OnResetViewClicked" />
+            <SearchBar x:Name="SearchControl"
+                       Placeholder="Search systems..."
+                       WidthRequest="220"
+                       TextChanged="OnSearchTextChanged"
+                       SearchButtonPressed="OnSearchButtonPressed" />
             <Label x:Name="StatusLabel"
                    Text="No folder loaded."
                    VerticalOptions="Center"

ZeroSpace/ZeroSpace.MapEditor/Views/MapEditorPage.xaml.cs

@@ -82,6 +82,84 @@ public partial class MapEditorPage : ContentPage
         FitView();
     }
 
+    private void CenterOnNode(MapNode node)
+    {
+        var width = MapView.Width;
+        var height = MapView.Height;
+        if (width > 0 && height > 0)
+        {
+            _drawable.OffsetX = width / 2 - node.X * _drawable.Scale;
+            _drawable.OffsetY = height / 2 - node.Y * _drawable.Scale;
+            MapView.Invalidate();
+        }
+    }
+
+    // ----- search -----
+
+    private void OnSearchTextChanged(object? sender, TextChangedEventArgs e) => ApplySearch(e.NewTextValue);
+
+    private void OnSearchButtonPressed(object? sender, EventArgs e)
+    {
+        ApplySearch(SearchControl.Text);
+        FocusFirstMatch();
+    }
+
+    private void ApplySearch(string? query)
+    {
+        var trimmed = query?.Trim();
+        if (string.IsNullOrEmpty(trimmed))
+        {
+            foreach (var node in _nodes)
+            {
+                node.IsHighlighted = false;
+            }
+
+            if (_folder is not null)
+            {
+                StatusLabel.Text = $"{_nodes.Count} systems loaded from {_folder}.";
+            }
+            else
+            {
+                StatusLabel.Text = "No folder loaded.";
+            }
+
+            MapView.Invalidate();
+            return;
+        }
+
+        var matchCount = 0;
+        foreach (var node in _nodes)
+        {
+            var isMatch = node.Doc.Name.Contains(trimmed, StringComparison.OrdinalIgnoreCase);
+            node.IsHighlighted = isMatch;
+            if (isMatch)
+            {
+                matchCount++;
+            }
+        }
+
+        if (matchCount == 0)
+        {
+            StatusLabel.Text = $"No systems matching '{trimmed}'.";
+        }
+        else
+        {
+            StatusLabel.Text = $"Found {matchCount} matching system{(matchCount == 1 ? string.Empty : "s")}.";
+        }
+
+        MapView.Invalidate();
+    }
+
+    private void FocusFirstMatch()
+    {
+        var match = _nodes.FirstOrDefault(static n => n.IsHighlighted);
+        if (match is not null)
+        {
+            Select(match);
+            CenterOnNode(match);
+        }
+    }
+
     // ----- pointer interaction -----
 
     private MapNode? HitTest(Point screen)
@@ -321,7 +399,15 @@ public partial class MapEditorPage : ContentPage
         FitView();
         Preferences.Set("MapEditorFolder", folder);
         UpdateDirtyState();
-        StatusLabel.Text = $"{_nodes.Count} systems loaded from {folder}.";
+
+        if (!string.IsNullOrWhiteSpace(SearchControl.Text))
+        {
+            ApplySearch(SearchControl.Text);
+        }
+        else
+        {
+            StatusLabel.Text = $"{_nodes.Count} systems loaded from {folder}.";
+        }
     }
 
     private async void OnOpenFolderClicked(object? sender, EventArgs e)