Bar: reimplemented hairline gap safety.

Modules/Bar/Bar.qml

@@ -27,8 +27,6 @@ Item {
   readonly property string barPosition: Settings.data.bar.position || "top"
   readonly property bool barIsVertical: barPosition === "left" || barPosition === "right"
   readonly property bool barFloating: Settings.data.bar.floating || false
-  readonly property real barMarginH: 0 //barFloating ? Settings.data.bar.marginHorizontal * Style.marginXL : 0
-  readonly property real barMarginV: 0 //barFloating ? Settings.data.bar.marginVertical * Style.marginXL : 0
 
   // Fill the parent (the Loader)
   anchors.fill: parent
@@ -38,7 +36,6 @@ Item {
     if (screen && screen.name) {
       Logger.d("Bar", "Bar screen set to:", screen.name)
       Logger.d("Bar", "  Position:", barPosition, "Floating:", barFloating)
-      Logger.d("Bar", "  Margins - H:", barMarginH, "V:", barMarginV)
       BarService.registerBar(screen.name)
     }
   }
@@ -64,31 +61,11 @@ Item {
       Item {
         id: bar
 
-        // Position and size the bar based on orientation and floating margins
-        x: {
-          var baseX = (root.barPosition === "right") ? (parent.width - Style.barHeight - root.barMarginH) : root.barMarginH
-          if (root.barPosition === "right")
-            return baseX // Extend left towards panels
-          return baseX
-        }
-        y: {
-          var baseY = (root.barPosition === "bottom") ? (parent.height - Style.barHeight - root.barMarginV) : root.barMarginV
-          if (root.barPosition === "bottom")
-            return baseY // Extend up towards panels
-          return baseY
-        }
-        width: {
-          var baseWidth = root.barIsVertical ? Style.barHeight : (parent.width - root.barMarginH * 2)
-          if (!root.barIsVertical)
-            return baseWidth // Horizontal bars extend via height, not width
-          return baseWidth + 1
-        }
-        height: {
-          var baseHeight = root.barIsVertical ? (parent.height - root.barMarginV * 2) : Style.barHeight
-          if (!root.barIsVertical)
-            return baseHeight
-          return baseHeight // Vertical bars extend via width, not height
-        }
+        // Position and size the bar content based on orientation
+        x: (root.barPosition === "right") ? (parent.width - Style.barHeight) : 0.5
+        y: (root.barPosition === "bottom") ? (parent.height - Style.barHeight) : 0.5
+        width: root.barIsVertical ? Style.barHeight : parent.width
+        height: root.barIsVertical ? parent.height : Style.barHeight
 
         // Corner states for new unified background system
         // State -1: No radius (flat/square corner)

Modules/MainScreen/BarContentWindow.qml

@@ -34,8 +34,8 @@ PanelWindow {
   readonly property string barPosition: Settings.data.bar.position || "top"
   readonly property bool barIsVertical: barPosition === "left" || barPosition === "right"
   readonly property bool barFloating: Settings.data.bar.floating || false
-  readonly property real barMarginH: barFloating ? Settings.data.bar.marginHorizontal * Style.marginXL : 0
-  readonly property real barMarginV: barFloating ? Settings.data.bar.marginVertical * Style.marginXL : 0
+  readonly property real barMarginH: Math.round(barFloating ? Settings.data.bar.marginHorizontal * Style.marginXL : 0)
+  readonly property real barMarginV: Math.round(barFloating ? Settings.data.bar.marginVertical * Style.marginXL : 0)
 
   // Anchor to the bar's edge
   anchors {

Modules/MainScreen/MainScreen.qml

@@ -326,7 +326,7 @@ PanelWindow {
       }
     }
 
-    // Bar placeholder - just for background positioning (actual bar content is in BarContentWindow)
+    // Bar background placeholder - just for background positioning (actual bar content is in BarContentWindow)
     Item {
       id: barPlaceholder
 
@@ -336,28 +336,29 @@ PanelWindow {
       // Screen reference
       property ShellScreen screen: root.screen
 
-      // Bar positioning properties (match Bar.qml logic)
+      // Bar background positioning properties
       readonly property string barPosition: Settings.data.bar.position || "top"
       readonly property bool barIsVertical: barPosition === "left" || barPosition === "right"
       readonly property bool barFloating: Settings.data.bar.floating || false
-      readonly property real barMarginH: barFloating ? Settings.data.bar.marginHorizontal * Style.marginXL : 0
-      readonly property real barMarginV: barFloating ? Settings.data.bar.marginVertical * Style.marginXL : 0
+      readonly property real barMarginH: barFloating ? Math.round(Settings.data.bar.marginHorizontal * Style.marginXL) : 0
+      readonly property real barMarginV: barFloating ? Math.round(Settings.data.bar.marginVertical * Style.marginXL) : 0
+      readonly property real attachmentOverlap: 1 // Attachment overlap to fix hairline gap with fractional scaling
 
       // Expose bar dimensions directly on this Item for BarBackground
       // Use screen dimensions directly
       x: {
         if (barPosition === "right")
-          return screen.width - Style.barHeight - barMarginH
+          return screen.width - Style.barHeight - barMarginH - attachmentOverlap // Extend left towards panels
         return barMarginH
       }
       y: {
         if (barPosition === "bottom")
-          return screen.height - Style.barHeight - barMarginV
+          return screen.height - Style.barHeight - barMarginV - attachmentOverlap
         return barMarginV
       }
       width: {
         if (barIsVertical) {
-          return Style.barHeight + 1
+          return Style.barHeight + attachmentOverlap
         }
         return screen.width - barMarginH * 2
       }
@@ -365,7 +366,7 @@ PanelWindow {
         if (barIsVertical) {
           return screen.height - barMarginV * 2
         }
-        return Style.barHeight
+        return Style.barHeight + attachmentOverlap
       }
 
       // Corner states (same as Bar.qml)