assistant: pick the chat's model, local or cloud, from the header

The canvas keeps the chat's model from the daemon (hello.chat_model,
conversation.model), falls back to the preferred one (set from shell.qml
later), and sends it as model with every ask, typed or spoken. The To .md
write stays without one: the daemon always writes with the local model.

Models.qml lists the daemon's models event, router models then cloud
ones, in a panel like History. It opens from the header label in chat,
from a Model button next to History outside chat, and with Ctrl+M. The
models are asked for on hello too, so the cloud marker is right before
the panel was ever opened. Moving a chat with turns to a cloud model
says once that its history goes to that provider.

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

1 files changed, 87 insertions, 0 deletions

diff --git a/desktop/assistant/Models.qml b/desktop/assistant/Models.qml
new file mode 100644
index 0000000..b1b2a38
--- /dev/null
+++ b/desktop/assistant/Models.qml
@@ -0,0 +1,87 @@
+// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+import QtQuick
+import ".."
+
+// The model panel, over the transcript: the router's models, then the
+// cloud ones, in the daemon's order. A pick applies to this chat from its
+// next question.
+Rectangle {
+    id: panel
+    property var canvas
+
+    color: Qt.alpha(Theme.base, 0.97)
+    radius: 8
+
+    MouseArea { anchors.fill: parent }   // keep clicks off the transcript below
+
+    ListView {
+        id: rows
+        anchors.fill: parent
+        clip: true
+        spacing: 2
+        model: panel.canvas.models
+
+        delegate: Rectangle {
+            id: r
+            required property var modelData
+            readonly property bool picked: r.modelData.id === panel.canvas.wanted
+            width: rows.width
+            height: 34
+            radius: 6
+            color: hover.hovered ? Qt.alpha(Theme.surface, 0.9) : "transparent"
+            border.width: r.picked ? 1 : 0
+            border.color: Qt.alpha(Theme.accent, 0.5)
+
+            HoverHandler { id: hover }
+            MouseArea {
+                anchors.fill: parent
+                cursorShape: Qt.PointingHandCursor
+                onClicked: panel.canvas.pickModel(r.modelData.id)
+            }
+            // nf-fa-cloud, present in Inconsolata Nerd Font.
+            Text {
+                id: icon
+                anchors { left: parent.left; leftMargin: 8; verticalCenter: parent.verticalCenter }
+                width: 16
+                text: r.modelData.cloud ? "" : ""
+                color: Theme.subtext
+                font { family: Theme.iconFamily; pixelSize: Theme.fontSize - 4 }
+            }
+            Text {
+                anchors { left: icon.right; leftMargin: 6; right: stat.left; rightMargin: 8
+                          verticalCenter: parent.verticalCenter }
+                // A cloud id without its provider: the right column says it.
+                text: r.modelData.cloud ? r.modelData.id.slice(r.modelData.provider.length + 1)
+                                        : r.modelData.id
+                elide: Text.ElideRight
+                color: Theme.text
+                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2; bold: r.picked }
+            }
+            Text {
+                id: stat
+                anchors { right: parent.right; rightMargin: 8; verticalCenter: parent.verticalCenter }
+                text: r.modelData.cloud ? r.modelData.provider : r.modelData.status
+                color: r.modelData.status === "loaded" ? Theme.green : Theme.subtext
+                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 4 }
+            }
+        }
+
+        Text {
+            anchors.centerIn: parent
+            visible: rows.count === 0
+            text: "No models: is llama-server running?"
+            color: Theme.overlay
+            font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
+        }
+    }
+}