### System details

Omarchy 4.0.4-1, quickshell 0.3.1-1, Hyprland 0.56.2-2, horizontal (top) bar, 2 tray items.

### What's wrong?

`omarchy.tray` reserves its **fully expanded** drawer width at all times, collapsed or not, so the widget permanently occupies bar space it never paints in.

`shell/plugins/bar/widgets/Tray.qml:235`:

```qml
readonly property int drawerBlockWidth: root.allItems.length > 0
  ? expandIcon.implicitWidth + root.drawerExtent : 0   // always the FULL extent

implicitWidth: pinnedWidth + drawerBlockWidth
```

Measured with `omarchy-shell shell debugBarGeometry`, collapsed, 2 tray items:

```
stock:    {"id":"omarchy.tray","width":81,"itemWidth":81}
```

81 = 27 (chevron) + 54 (2 x Style.bar.iconSlot reserved for the closed drawer). Only the 27px chevron is drawn; the other 54px is empty and always there.

The widget already maintains an animated `revealExtent` (`drawerExtent * revealProgress`, line 34) and uses it to position the chevron and slide the icons — the width binding just never uses it.

The dead region is clearly known about: line 240 masks it out of hit-testing so hovering it does not expand the drawer and clicks fall through. What is not handled is anything *drawing* there. On a fully transparent bar it is merely invisible padding that displaces neighbouring widgets. As soon as a background is painted per module rather than as one continuous bar fill, the reserved-but-empty region gets filled in, and a collapsed tray renders as a block of empty background next to the chevron — which clears the instant the drawer opens, so it reads as a rendering glitch rather than a layout one.

### Suggested fix

Size the block from the reveal instead of the full extent, and pin the chevron to the block's right edge so it holds still on screen while the block grows leftward out from under it:

```qml
readonly property int revealPx: Math.round(root.revealExtent)
readonly property int drawerBlockWidth: root.allItems.length > 0
  ? expandIcon.implicitWidth + revealPx : 0
```

with `expandIcon.x: drawerBlockWidth - width`, `trayClip.x: 0`, `trayClip.width: revealPx`, `trayIcons.x: revealPx - drawerExtent`.

The chevron's screen position is then stable by construction: the widget's left edge moves left by exactly the amount the block gains.

Rounding matters. `drawerBlockWidth` is an `int` while `revealExtent` is a real, so letting the clip and the icon row round it independently puts them on different subpixels and the icons visibly shimmer while the drawer animates. Deriving both from one shared rounded value fixes that.

Verified on the system above:

```
patched:  {"id":"omarchy.tray","width":27,"itemWidth":27}
```

Drawer still opens and closes normally, icons reveal nearest-the-chevron first, and the chevron does not move.

### Not covered

Only the horizontal tray. `verticalTrayRoot.drawerBlockHeight` (~line 322) has the identical flaw, left alone as I have no vertical bar to verify a change on.