assistant: opening the canvas loads the preferred model

A preferred model that only took effect from the settings page did
nothing the next time another client had swapped it out. On this
desktop one model and one client run at a time, so opening the canvas
is when the assistant's model should come back: if the preferred one is
neither loaded nor loading, it is loaded, and the canvas header says so
until the router reports it in. The daemon still never asks for a model;
with no preference set nothing changes.

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

1 files changed, 9 insertions, 2 deletions

diff --git a/desktop/shell.qml b/desktop/shell.qml
index ec58936..ea2ce67 100644
--- a/desktop/shell.qml
+++ b/desktop/shell.qml
@@ -81,7 +81,7 @@ ShellRoot {
             SunsetModule {},
             IdleModule {},
             AutostartModule {},
-            AssistantModule {},
+            AssistantModule { id: asstSettings },
             PresetsModule {},
             GitModule {},
         ]
@@ -109,7 +109,14 @@ ShellRoot {
 
     // The assistant canvas on SUPER+Home, a view over desktop-assistant's
     // socket. See assistant/README.md.
-    Assistant { id: assistant }
+    Assistant { id: assistant; swapping: asstSettings.loading }
+
+    // Opening the assistant loads its preferred model if another one is in
+    // VRAM. See modules/assistant/README.md.
+    Connections {
+        target: assistant
+        function onOpenChanged() { if (assistant.open) asstSettings.ensurePreferred(); }
+    }
 
     // The waybar launcher and the deep-link keybinds all reach this:
     //   qs -p <this dir> ipc call drawer toggle       -> the grid