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, 15 insertions, 0 deletions

diff --git a/desktop/modules/bluetooth/BluetoothModule.qml b/desktop/modules/bluetooth/BluetoothModule.qml
index 84ac9a4..80f80b9 100644
--- a/desktop/modules/bluetooth/BluetoothModule.qml
+++ b/desktop/modules/bluetooth/BluetoothModule.qml
@@ -25,6 +25,7 @@ Module {
     alwaysActive: true
 
     readonly property var adapter: Bluetooth.defaultAdapter
+    readonly property Pairing pairing: Pairing {}
     readonly property var devices: Bluetooth.devices ? Bluetooth.devices.values : []
     readonly property var connectedDevices: devices.filter(d => d.connected)
     readonly property var pairedDevices: devices.filter(d => d.paired && !d.connected)
@@ -44,6 +45,20 @@ Module {
 
     property Process notifyProc: Process {}
 
+    // Pairing runs through bluetoothctl; on success connect natively, on
+    // failure notify, since the drawer may have closed by then.
+    property Connections pairingConn: Connections {
+        target: mod.pairing
+        function onFinished(address, ok) {
+            if (!ok) {
+                mod.notify("Bluetooth", "Pairing failed: " + mod.pairing.error);
+                return;
+            }
+            const d = mod.devices.find(x => x.address === address);
+            if (d) d.connect();
+        }
+    }
+
     tileContent: Component { BluetoothTile { bt: mod } }
 
     page: Component {