Add selectable Voxtype and Superwhisper dictation (#14552)

* Add selectable dictation backends

* Move dictation migration after repository priority update

* Extract backend-specific dictation installers

* Keep dictation installer dispatcher executable

* Call dictation backend installers directly

* Drop legacy Superwhisper migration and runtime cleanup

* Separate dictation defaults from generic recording protocol

* Add backend-specific dictation removers

* Preserve existing Voxtype selection during upgrade

* Make dictation backend selection safe and retryable

* Show the dictation indicator only for selected Voxtype

* Allow switching away from stopped Superwhisper

* Remove the built-in bar dictation indicator

* Store default dictation selection under defaults

* Rename dictation backend selector to use

* Move dictation removers into their own menu category

shell/plugins/bar/indicators/Dictation.qml

@@ -1,38 +0,0 @@
-import QtQuick
-import Quickshell.Io
-import qs.Ui
-
-BarIndicator {
-  id: root
-
-  property string state: "idle"
-  property string icon: ""
-
-  active: state === "recording"
-  activeText: icon
-  inactiveText: "󰍬"
-  activeTooltipText: state
-  inactiveTooltipText: "Dictate"
-
-  function update(raw) {
-    var data = extractData(raw)
-
-    state = String(data.alt || data.class || "idle")
-    if (state === "recording") icon = "󰍬"
-    else if (state === "transcribing") icon = "󰔟"
-    else icon = ""
-  }
-
-  Process {
-    command: ["bash", "-c", "omarchy-voxtype-status"]
-    running: true
-    stdout: SplitParser {
-      onRead: function(data) { root.update(data) }
-    }
-  }
-
-  onPressed: function() {
-    if (!root.bar) return
-    root.bar.run("omarchy-voxtype-config")
-  }
-}