shell: stage the AirPods opening card

surfaces/quickshell/services/AccessoryPresentation.qml

@@ -0,0 +1,36 @@
+// The shell's projection of an accessory event already admitted by sessiond.
+//
+// This is deliberately a view-state holder, not a Bluetooth service. LibrePods
+// cannot import it, and there is no Quickshell IPC target here: an accessory
+// reaches this state only when SessiondBridge receives sessiond's directive.
+pragma Singleton
+
+import QtQuick
+
+QtObject {
+    id: root
+
+    // Incremented for every admitted presentation. A surface keys its local
+    // animation and timeout to this edge, so reconnect updates do not grow a
+    // pile of cards.
+    property int generation: 0
+    property string accessoryId: ""
+    property string label: "AirPods"
+    property int leftCharge: -1
+    property int rightCharge: -1
+    property int caseCharge: -1
+    property bool charging: false
+
+    function present(event) {
+        // The daemon has already checked producer admission and payload class.
+        // Keep this copy bounded: QML needs display fields, never pairing keys,
+        // advertisement bytes, or arbitrary producer metadata.
+        root.accessoryId = String(event.accessory_id ?? "");
+        root.label = String(event.label ?? "AirPods");
+        root.leftCharge = Number(event.left_charge ?? -1);
+        root.rightCharge = Number(event.right_charge ?? -1);
+        root.caseCharge = Number(event.case_charge ?? -1);
+        root.charging = event.charging === true;
+        root.generation += 1;
+    }
+}

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");

surfaces/quickshell/services/qmldir

@@ -1,5 +1,6 @@
 BooruResponseData 1.0 BooruResponseData.qml
 singleton AgentSessions 1.0 AgentSessions.qml
+singleton AccessoryPresentation 1.0 AccessoryPresentation.qml
 singleton Ai 1.0 Ai.qml
 singleton AppSearch 1.0 AppSearch.qml
 singleton Audio 1.0 Audio.qml