shell: stage the AirPods opening card

surfaces/quickshell/services/SessiondBridge.qml

@@ -442,6 +442,13 @@ Singleton {
             Session.lock();
             return;
         }
+        if (msg.directive === "accessory_presentation") {
+            // sessiond sends this only after producer admission and content
+            // classification. The shell projects it; it does not reinterpret
+            // a Bluetooth observation into an authority decision.
+            AccessoryPresentation.present(msg.presentation ?? {});
+            return;
+        }
         console.error("[sessiond-bridge] UNKNOWN authority directive: "
             + JSON.stringify(msg)
             + " — this shell is older than the daemon driving it");