initialize repo

godot_game/Civilization.GodotIntegration/SelectionSystem.cs

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+using System.Linq;
+using Civilization.Core.Game;
+using Civilization.Core.Units;
+using Godot;
+
+namespace Civilization.GodotIntegration;
+
+public partial class SelectionSystem : Node2D
+{
+    public Unit? SelectedUnit { get; private set; }
+    
+    [Export] public SelectedUnitPanel UnitPanel;
+
+    public bool TrySelectUnitAt(Vector2I tilePos, GameState state)
+    {
+        var unit = state.GetUnitsForPlayer(state.CurrentPlayer.Id).FirstOrDefault(u => u.Position == tilePos);
+        if (unit == null) return false;
+        
+        SelectedUnit = unit;
+        GD.Print($"Selected unit {unit.Id} at {tilePos} ({unit.Type})");
+        
+        UnitPanel.ShowFor(unit);
+        return true;
+    }
+    
+    public void Deselect()
+    {
+        SelectedUnit = null;
+        UnitPanel.HidePanel();
+    }
+}