fix: resolve all build warnings and exclude minimized windows from hit-testing

- Fix duplicate <summary> tag in RenderCoordinator
- Suppress null dereference warnings on _windowSystem in Window.Layout and Window.State
- Suppress CS0067 for unused interface-required events in VideoControl
- Suppress CS0414 for MouseEnter in TreeControl
- Exclude minimized windows from GetWindowAtPoint hit-testing

Author: Nikolaos Protopapas

SharpConsoleUI/Controls/TreeControl/TreeControl.Mouse.cs

@@ -42,12 +42,12 @@ public partial class TreeControl
 		/// </summary>
 		public event EventHandler<MouseEventArgs>? MouseRightClick;
 
-		#pragma warning disable CS0067 // Event never raised (interface requirement)
+		#pragma warning disable CS0067, CS0414 // Event never raised / assigned but never used (interface requirement)
 		/// <summary>
 		/// Occurs when the mouse enters the control area.
 		/// </summary>
 		public event EventHandler<MouseEventArgs>? MouseEnter;
-		#pragma warning restore CS0067
+		#pragma warning restore CS0067, CS0414
 
 		/// <summary>
 		/// Occurs when the mouse leaves the control area.

SharpConsoleUI/Controls/VideoControl/VideoControl.Mouse.cs

@@ -26,7 +26,9 @@ public partial class VideoControl
 		public event EventHandler<MouseEventArgs>? MouseClick;
 
 		/// <inheritdoc/>
+#pragma warning disable CS0067 // Event never raised (interface requirement)
 		public event EventHandler<MouseEventArgs>? MouseDoubleClick;
+#pragma warning restore CS0067
 
 		/// <inheritdoc/>
 		public event EventHandler<MouseEventArgs>? MouseRightClick;
@@ -38,7 +40,9 @@ public partial class VideoControl
 		public event EventHandler<MouseEventArgs>? MouseLeave;
 
 		/// <inheritdoc/>
+#pragma warning disable CS0067 // Event never raised (interface requirement)
 		public event EventHandler<MouseEventArgs>? MouseMove;
+#pragma warning restore CS0067
 
 		/// <inheritdoc/>
 		public bool ProcessMouseEvent(MouseEventArgs args)

SharpConsoleUI/Rendering/RenderCoordinator.cs

@@ -694,7 +694,6 @@ private void RenderPanel(Panel.Panel? panel, int y, Color themeFg, Color themeBg
 			_consoleDriver.WriteBufferRegion(0, y, buffer, 0, 0, buffer.Width, themeBg);
 		}
 
-		/// <summary>
 		/// <summary>
 		/// Checks if a window is completely covered by other windows (with caching).
 		/// </summary>

SharpConsoleUI/Window.Layout.cs

@@ -107,7 +107,7 @@ public void RemovePortal(IWindowControl ownerControl, LayoutNode portalNode)
 			// Use the full desktop as the buffer so submenus can extend in any direction.
 			// BufferOrigin maps buffer (0,0) to the window's content origin, so
 			// window-content-relative coordinates (used by dropdown.Bounds) work directly.
-			var desktopDims = _windowSystem.DesktopDimensions;
+			var desktopDims = _windowSystem!.DesktopDimensions;
 			var bufferSize = new System.Drawing.Size(desktopDims.Width, desktopDims.Height);
 			var bufferOrigin = new System.Drawing.Point(contentOriginX, contentOriginY);
 
@@ -131,7 +131,7 @@ private void RemoveDesktopPortal(IWindowControl ownerControl, LayoutNode portalN
 			if (_desktopPortalMap.TryGetValue(portalNode, out var desktopPortal))
 			{
 				_desktopPortalMap.Remove(portalNode);
-				_windowSystem.DesktopPortalService.RemovePortal(desktopPortal);
+				_windowSystem!.DesktopPortalService.RemovePortal(desktopPortal);
 			}
 		}
 

SharpConsoleUI/Window.State.cs

@@ -503,7 +503,7 @@ public void SetIsActive(bool value)
 				if (CloseOnDeactivate)
 				{
 					// Defer close to avoid re-entrancy — we're inside SetIsActive
-					_windowSystem.EnqueueOnUIThread(() => Close(force: true));
+					_windowSystem!.EnqueueOnUIThread(() => Close(force: true));
 				}
 			}
 		InvalidateBorderCache();

SharpConsoleUI/Windows/WindowQueryHelper.cs

@@ -93,6 +93,7 @@ public static Window FindWindowToActivate(Window targetWindow, ConsoleWindowSyst
 		{
 			List<Window> windows = context.Windows.Values
 				.Where(window =>
+					window.State != WindowState.Minimized &&
 					point.X >= window.Left &&
 					point.X < window.Left + window.Width &&
 					point.Y - context.DesktopUpperLeft.Y >= window.Top &&