Extract panels out into their own top-level concern

shell/Ui/PanelController.qml

@@ -1,49 +1,16 @@
 import QtQuick
-import Quickshell
-import Quickshell.Io
-
-// Owns the open/close lifecycle for a bar panel widget. Wraps the
-// repetitive popupOpen + closePopout + toggle/show/hide IpcHandler triplet
-// so each panel just declares one of these and binds its WidgetButton +
-// KeyboardPanel to the exposed `open` property.
+// Stores the open state for a shell panel. Panel owns the public lifecycle
+// methods and IPC wiring; this object only keeps state separate from the
+// panel implementation's own properties.
 //
 // Usage:
-//   PanelController { id: ctrl; ipcTarget: "audioPanel" }
-//
-//   WidgetButton { onPressed: ctrl.toggle() }
-//   KeyboardPanel { open: ctrl.open; owner: ctrl; focusTarget: keyCatcher }
-//
-// The bar popout coordinator uses `owner` as a registry key, so each
-// PanelController instance doubles as that key. KeyboardPanel calls
-// `owner.closePopout()` when another panel grabs the slot.
-//
-// Set `manageIpc: false` when the panel needs to declare its own IpcHandler
-// for additional methods on the same target (monitorPanel adds brightness +
-// state). Quickshell only honors one IpcHandler per target, so the panel's
-// handler must then also delegate toggle/show/hide to this controller.
+//   PanelController { id: panelController }
 QtObject {
   id: root
 
-  // IPC target name. The bar pairs this with the bar widget's filename so a
-  // Hyprland keybind (`omarchy-shell <target> toggle`) summons the panel.
-  property string ipcTarget: ""
-  property bool manageIpc: true
-
   property bool open: false
 
   function toggle() { open = !open }
   function show() { if (!open) open = true }
   function hide() { open = false }
-  function closePopout() { open = false }
-
-  property IpcHandler _ipc: manageIpc ? ipcComponent.createObject(root) : null
-
-  property Component ipcComponent: Component {
-    IpcHandler {
-      target: root.ipcTarget
-      function toggle(): void { root.toggle() }
-      function show(): void { root.show() }
-      function hide(): void { root.hide() }
-    }
-  }
 }