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

test/shell.d/voxtype-invitation-test.sh

@@ -45,8 +45,8 @@ run_invitation_hook
 [[ -f $test_home/.local/state/omarchy/done/voxtype-install-invitation ]] || fail "Voxtype invitation records completion"
 [[ -f $hook_path ]] || fail "Voxtype invitation keeps its hook installed"
 [[ $(grep -c '^notification$' "$log_file") -eq 1 ]] || fail "Voxtype invitation sends one notification"
-grep -qx 'exec:omarchy-launch-floating-terminal-with-presentation omarchy-voxtype-install' "$log_file" ||
-  fail "Voxtype invitation attaches the installer to the notification"
+grep -qx 'exec:omarchy-menu summon setup.default.dictation' "$log_file" ||
+  fail "dictation invitation opens the backend installation choices"
 grep -q '^systemd-run:' "$log_file" && fail "Voxtype invitation needs no unit to hold an unanswered toast"
 
 HOME="$test_home" PATH="$test_bin:$ROOT/bin:$PATH" TEST_LOG="$log_file" bash "$hook_path"