companion: shown or hidden survives a restart, with a settings switch

SUPER+\ only flipped a property, so every restart of the desktop shell
brought her back. Whether she is shown is now `companion` in Prefs.qml,
set by the IPC and by a switch on a new Settings > Desktop > Companion
page. Prefs gains `ready`, so she waits for the file rather than showing
at the default and then vanishing; the greeting now plays on every
appearance, the one at login included.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2 files changed, 21 insertions, 19 deletions

diff --git a/desktop/companion/Companion.qml b/desktop/companion/Companion.qml
index e6d21e2..12dd009 100644
--- a/desktop/companion/Companion.qml
+++ b/desktop/companion/Companion.qml
@@ -30,8 +30,18 @@ PanelWindow {
 
     readonly property string art: Quickshell.env("HOME") + "/.local/share/keystone/companion/2b/frames"
 
-    // SUPER+\, through the IPC below.
-    property bool present: true
+    // SUPER+\ (the IPC below) and the Companion settings page, through Prefs,
+    // so it survives a restart.
+    readonly property bool present: Prefs.ready && Prefs.companion
+    onPresentChanged: {
+        if (root.present) {
+            root.destructAt = 0;          // the skirt is back
+            root.now = Date.now();
+            greet.restart();
+        } else {
+            root.stopMonologue();
+        }
+    }
 
     // The monitor she is on trails the focused one: a change plays her exit
     // here first, and only then moves the window (settled, below).
@@ -298,20 +308,8 @@ PanelWindow {
 
     // --- showing and hiding ----------------------------------------------
 
-    function appear() {
-        if (root.present) return;
-        root.present = true;
-        root.destructAt = 0;          // the skirt is back
-        root.now = Date.now();
-        greet.restart();
-    }
-    function dismiss() {
-        if (!root.present) return;
-        root.stopMonologue();
-        bubble.hide();
-        root.present = false;
-    }
-    // After the drop-in has landed.
+    // After the drop-in has landed, on every appearance, the one at login
+    // included.
     Timer {
         id: greet
         interval: 450
@@ -324,9 +322,9 @@ PanelWindow {
     //   qs -p <desktop> ipc call companion toggle     -> SUPER+\
     IpcHandler {
         target: "companion"
-        function toggle() { if (root.present) root.dismiss(); else root.appear(); }
-        function show() { root.appear(); }
-        function hide() { root.dismiss(); }
+        function toggle() { Prefs.setCompanion(!Prefs.companion); }
+        function show() { Prefs.setCompanion(true); }
+        function hide() { Prefs.setCompanion(false); }
     }
 
     // The exit has played on the old monitor: move, and the entrance plays.
diff --git a/desktop/companion/README.md b/desktop/companion/README.md
index cfa3ffc..4582b64 100644
--- a/desktop/companion/README.md
+++ b/desktop/companion/README.md
@@ -18,6 +18,10 @@ The design, with what was measured on the way, is
 `Figure.qml` is not `Sprite.qml` because QtQuick has a `Sprite` type, and
 it wins over the directory's own file (see AGENTS.md).
 
+Whether she is shown is `companion` in `Prefs.qml`, so it survives a
+restart: SUPER+\ and the switch on Settings > Desktop > Companion
+(`desktop/modules/companion/`) both set it.
+
 ## Art
 
 Not in the repo: the character is Square Enix's and this repo is GPLv2.