Watch: waiting-count complication and multi-select questions

A WidgetKit extension (accessoryCircular, Rectangular, Inline, Corner) shows
GET /v1/summary. The device token moves to the App Group's Keychain access
group on launch so the extension can read it without re-pairing; the app
reloads the timeline when its feed counts change and on notifications.
Multi-select questions toggle options and send an array of values.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

watch/WristCode/Shared/SharedState.swift

@@ -0,0 +1,22 @@
+// What the app tells the complication through the App Group's defaults: whether it is in demo mode,
+// and the last summary it saw, which the complication shows when it cannot reach the gateway.
+
+import Foundation
+
+enum SharedState {
+    private static var defaults: UserDefaults { UserDefaults(suiteName: DeviceStore.appGroup) ?? .standard }
+    private static let demoKey = "demo"
+    private static let summaryKey = "summary"
+
+    /// True while the app is in demo mode, so the complication shows the demo counts too.
+    static var demo: Bool {
+        get { defaults.bool(forKey: demoKey) }
+        set { defaults.set(newValue, forKey: demoKey) }
+    }
+
+    /// The last summary the app or the complication saw, or nil after signing out.
+    static var lastSummary: Summary? {
+        get { defaults.data(forKey: summaryKey).flatMap { try? JSON.decoder().decode(Summary.self, from: $0) } }
+        set { defaults.set(newValue.flatMap { try? JSON.encoder().encode($0) }, forKey: summaryKey) }
+    }
+}