feat(desktop): pair bluetooth devices

Quickshell has no BlueZ agent and no generic D-Bus module, so a pairing
that needs a passkey confirmed cannot be done from QML. bluetoothctl
registers its own agent, so pairing is the one shell-out; adapter state,
scanning, connecting and forgetting all stay native.

The timeout is the ceiling: a device bluetoothctl cannot auto-confirm
fails visibly rather than hanging the page.

1 files changed, 52 insertions, 0 deletions

diff --git a/desktop/modules/bluetooth/BluetoothPage.qml b/desktop/modules/bluetooth/BluetoothPage.qml
index c608d82..26cb0ef 100644
--- a/desktop/modules/bluetooth/BluetoothPage.qml
+++ b/desktop/modules/bluetooth/BluetoothPage.qml
@@ -124,4 +124,56 @@ Column {
             width: page.width
         }
     }
+
+    // --- Available (found while scanning, not yet paired) ---
+
+    Text {
+        width: page.width
+        visible: page.bt.availableDevices.length > 0
+        text: "Available"
+        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2; bold: true }
+        color: Theme.subtext
+    }
+
+    Repeater {
+        model: page.bt.availableDevices
+
+        Rectangle {
+            required property var modelData
+
+            width: page.width
+            implicitHeight: availText.implicitHeight + 16
+            radius: 8
+            color: Qt.alpha(Theme.surface, 0.35)
+
+            Text {
+                id: availText
+                anchors { left: parent.left; leftMargin: 10; verticalCenter: parent.verticalCenter }
+                width: parent.width - pairBtn.width - 28
+                elide: Text.ElideRight
+                text: page.bt.pairing.busy && page.bt.pairing.address === modelData.address
+                    ? "Pairing…"
+                    : (modelData.name || modelData.deviceName || modelData.address)
+                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 2 }
+                color: Theme.text
+            }
+
+            Button {
+                id: pairBtn
+                anchors { right: parent.right; rightMargin: 8; verticalCenter: parent.verticalCenter }
+                text: "Pair"
+                enabled: !page.bt.pairing.busy
+                onClicked: page.bt.pairing.pair(modelData.address)
+            }
+        }
+    }
+
+    Text {
+        width: page.width
+        visible: page.bt.pairing.error !== ""
+        wrapMode: Text.Wrap
+        text: page.bt.pairing.error
+        font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 3 }
+        color: Theme.red
+    }
 }