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

default/hypr/dictation-backend.lua

@@ -0,0 +1,24 @@
+-- Backends may supply their own desktop integration without editing the
+-- user's Hyprland config. Recording bindings remain owned by Omarchy.
+local paths = require("default.hypr.paths")
+local pipe = io.popen("omarchy-default-dictation 2>/dev/null", "r")
+if not pipe then
+  return
+end
+
+local backend = pipe:read("*l")
+pipe:close()
+
+if not backend or not backend:match("^[%w%-]+$") or o.cmd_missing("omarchy-dictation-" .. backend) then
+  return
+end
+
+local integration = paths.config_home .. "/" .. backend .. "/shortcuts.lua"
+local file = io.open(integration, "r")
+if file then
+  file:close()
+  local ok, error = pcall(dofile, integration)
+  if not ok then
+    print("Could not load dictation backend " .. backend .. ": " .. tostring(error))
+  end
+end