SmartPanel: Tighter sizing by using the minimum size.

Modules/MainScreen/PanelPlaceholder.qml

@@ -56,6 +56,48 @@ Item {
   // Expose panelBackground as panelItem for AllBackgrounds
   readonly property var panelItem: panelBackground
 
+  // Primary anchor edge for window positioning
+  readonly property string primaryAnchorEdge: {
+    if (effectivePanelAnchorTop)
+      return "top"
+    if (effectivePanelAnchorBottom)
+      return "bottom"
+    if (effectivePanelAnchorLeft)
+      return "left"
+    if (effectivePanelAnchorRight)
+      return "right"
+    return "top"
+    // default
+  }
+
+  // Calculate window margins for content-sized panel windows
+  function getWindowMargins() {
+    if (!root.width || !root.height)
+      return {
+        "top": 0,
+        "bottom": 0,
+        "left": 0,
+        "right": 0
+      }
+
+    // Determine which edges are anchored (matching SmartPanelWindow logic)
+    var isPrimaryVertical = primaryAnchorEdge === "top" || primaryAnchorEdge === "bottom"
+    var isPrimaryHorizontal = primaryAnchorEdge === "left" || primaryAnchorEdge === "right"
+
+    // Anchor the primary edge + opposite edges of the other axis
+    var useTop = effectivePanelAnchorTop || primaryAnchorEdge === "top" || isPrimaryHorizontal
+    var useBottom = effectivePanelAnchorBottom || primaryAnchorEdge === "bottom" || isPrimaryHorizontal
+    var useLeft = effectivePanelAnchorLeft || primaryAnchorEdge === "left" || isPrimaryVertical
+    var useRight = effectivePanelAnchorRight || primaryAnchorEdge === "right" || isPrimaryVertical
+
+    return {
+      "top": useTop ? panelBackground.targetY : 0,
+      "bottom": useBottom ? (root.height - panelBackground.targetY - panelBackground.targetHeight) : 0,
+      "left": useLeft ? panelBackground.targetX : 0,
+      "right": useRight ? (root.width - panelBackground.targetX - panelBackground.targetWidth) : 0
+    }
+  }
+
   // Bar configuration
   readonly property string barPosition: Settings.data.bar.position
   readonly property bool barIsVertical: barPosition === "left" || barPosition === "right"