assistant: Load no longer changes the preferred model

Load set the preference as well as swapping the model in, so loading a
model from the settings page for any reason made it the assistant's
model too: after loading Qwen there, the canvas kept Qwen instead of
bringing the preferred Gemma back. Load and Prefer are now separate
buttons: Load swaps a model in now and leaves the preference alone, and
Prefer only records which model the canvas loads when it opens.

The canvas header also showed a stale model name after a swap; it now
takes the model from the daemon's ctx event, which carries it from
desktop-assistant f9d4644 on.

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

1 files changed, 4 insertions, 4 deletions

diff --git a/desktop/modules/assistant/AssistantModule.qml b/desktop/modules/assistant/AssistantModule.qml
index b53a33f..8253cc6 100644
--- a/desktop/modules/assistant/AssistantModule.qml
+++ b/desktop/modules/assistant/AssistantModule.qml
@@ -179,11 +179,11 @@ Module {
     }
 
     // The router keeps one model resident, so this swaps out whatever is
-    // loaded, for every client: it runs only on a click. The id becomes the
-    // preferred one, and the list is polled until the router reports it
-    // loaded, since the request may return before the load finishes.
+    // loaded, for every client. It does not touch the preferred model: a
+    // load from the page is for now, and the canvas brings the preferred one
+    // back when it opens. The list is polled until the router reports the
+    // model loaded, since the request may return before the load finishes.
     function loadModel(id) {
-        Prefs.setAssistantModel(id);
         am.modelError = "";
         am.loading = id;
         am.run(["curl", "-s", "-m", "600", "-X", "POST", "-H", "Content-Type: application/json",