Route panel hotkeys through the shell IPC target so they survive reloads

Bar-widget panels (audio, bluetooth, network, power, monitor) used to be
toggled via their own per-plugin IpcHandler targets. Quickshell resolves
duplicate targets first-handler-wins, so after a plugin or bar reload the
stale handler of the destroyed widget instance kept claiming the target
and the hotkeys went dead.

The shell root's IpcHandler lives outside the reload cycle, so summon,
hide, and toggle now go through `omarchy-shell shell toggle <plugin>`
and the shell routes to the live widget instance via the bar's slot
registry. Panel plugins that are also panel/overlay/menu kinds keep
using the panel loader path. Failures to find a live widget are logged
so a widget missing from the bar layout stays diagnosable.

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

shell/plugins/bar/Bar.qml

@@ -333,6 +333,44 @@ Item {
     return true
   }
 
+  // Resolve the live bar-widget instance for a plugin id (e.g. "omarchy.bluetooth").
+  // Only widgets that expose popup open/close methods count; plain indicators
+  // (clock, workspaces, tray) return null. Used by shell.summon/toggle so
+  // panel hotkeys route through the bar instead of a per-target IpcHandler
+  // that goes stale when the bar reloads its widget instances.
+  function findPanelWidget(pluginId) {
+    var id = String(pluginId || "")
+    if (!id) return null
+    for (var i = 0; i < moduleSlots.length; i++) {
+      var slot = moduleSlots[i]
+      if (!slot || !slot.activeItem) continue
+      if (slot.moduleName !== id) continue
+      var item = slot.activeItem
+      if (typeof item.open !== "function" || typeof item.close !== "function" || item.opened === undefined) continue
+      return item
+    }
+    return null
+  }
+
+  function summonBarWidget(pluginId) {
+    var item = findPanelWidget(pluginId)
+    if (!item || typeof item.open !== "function") return false
+    item.open()
+    return true
+  }
+
+  function hideBarWidget(pluginId) {
+    var item = findPanelWidget(pluginId)
+    if (!item || typeof item.close !== "function") return false
+    item.close()
+    return true
+  }
+
+  function isBarWidgetOpen(pluginId) {
+    var item = findPanelWidget(pluginId)
+    return !!item && item.opened === true
+  }
+
   function entrySettings(entry) {
     return BarModel.entrySettings(entry)
   }

shell/plugins/bar/widgets/Microphone.qml

@@ -42,7 +42,7 @@ BarWidget {
     active: root.inUse
     tooltipText: root.muted ? "Microphone muted" : (root.inUse ? "Microphone in use" : "Microphone live")
     onPressed: function(b) {
-      if (b === Qt.MiddleButton) root.bar.run("omarchy-shell omarchy.audio toggle")
+      if (b === Qt.MiddleButton) root.bar.run("omarchy-shell shell toggle omarchy.audio")
       else root.toggleMute()
     }
     onWheelMoved: function(delta) {