quickshell: pixel-align dropdowns to fix fuzzy bar joins

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

settings/quickshell.nix

@@ -993,10 +993,12 @@ in
                         if (visible && !closing) _autoClose.restart();
                     }
 
-                    x: alignRight ? bar.width - width : Math.min(
+                    // Whole-pixel x — fractional positions (odd widths centered
+                    // on the bar) antialias the ears/borders into fuzzy seams.
+                    x: Math.round(alignRight ? bar.width - width : Math.min(
                         bar.width - width,
                         Math.max(0, dropdownX - (fullWidth + 16) / 2)
-                    )
+                    ))
                     y: 30
                     visible: false
                     width: fullWidth + (alignRight ? 8 : 16)
@@ -1714,8 +1716,10 @@ in
                 BarDropdown {
                     id: calPopup
                     dropdownX: bar.width / 2
-                    fullWidth: calRow.width + 24
-                    fullHeight: calRow.height + 24
+                    // ceil: Text metrics give fractional sizes; fractional rect
+                    // edges render as soft 2px lines
+                    fullWidth: Math.ceil(calRow.width) + 24
+                    fullHeight: Math.ceil(calRow.height) + 24
                     autoCloseMs: 3000
 
                     // Month being viewed; reset to today when the popup opens