Simplify service lookups with optional chaining

The bar-null-shell-null-typeof-function ternary guarded against our own
shell missing a method it always defines. bar?.shell?.firstPartyServiceFor()
handles the only real case, delayed bar injection, in one line. The
typeof checks that probe genuinely third-party plugin objects stay.

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

shell/plugins/bar/indicators/Dnd.qml

@@ -5,9 +5,7 @@ import qs.Ui
 BarIndicator {
   id: root
 
-  readonly property var notificationService: bar && bar.shell && typeof bar.shell.firstPartyServiceFor === "function"
-    ? bar.shell.firstPartyServiceFor("omarchy.notifications")
-    : null
+  readonly property var notificationService: bar?.shell?.firstPartyServiceFor("omarchy.notifications")
   readonly property bool dnd: notificationService ? notificationService.doNotDisturb : false
 
   active: dnd

shell/plugins/notifications/BarWidget.qml

@@ -25,9 +25,7 @@ BarWidget {
 
   // Look up the long-running notifications service through the shell host.
   readonly property var hostShell: bar && bar.shell ? bar.shell : null
-  readonly property var notificationService: hostShell && typeof hostShell.firstPartyServiceFor === "function"
-    ? hostShell.firstPartyServiceFor("omarchy.notifications")
-    : null
+  readonly property var notificationService: hostShell?.firstPartyServiceFor("omarchy.notifications")
 
   function isChromiumDerived(app, appIcon) {
     return NotificationLogic.isChromiumDerived(app, appIcon)

shell/plugins/panels/audio/Panel.qml

@@ -17,7 +17,7 @@ Panel {
   readonly property var source: Pipewire.defaultAudioSource
   readonly property var nodes: Pipewire.nodes ? Pipewire.nodes.values : []
   readonly property var mprisPlayers: Mpris.players ? Mpris.players.values : []
-  readonly property var mediaService: bar && bar.shell ? bar.shell.firstPartyServiceFor("omarchy.media") : null
+  readonly property var mediaService: bar?.shell?.firstPartyServiceFor("omarchy.media")
   readonly property var activeMediaPlayer: mediaService ? mediaService.activePlayer : null
 
   readonly property var candidateSinks: {

shell/plugins/services/media/BarWidget.qml

@@ -7,7 +7,7 @@ BarWidget {
   id: root
   moduleName: "omarchy.media"
 
-  readonly property var mediaService: bar && bar.shell ? bar.shell.firstPartyServiceFor("omarchy.media") : null
+  readonly property var mediaService: bar?.shell?.firstPartyServiceFor("omarchy.media")
   readonly property var activePlayer: mediaService ? mediaService.activePlayer : null
   readonly property var sourcePlayers: mediaService ? mediaService.sourcePlayers : []