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/API/GatewayClient.swift

@@ -44,6 +44,7 @@ enum GatewayError: LocalizedError, Equatable {
 /// serves fixtures, so every screen works without a live gateway.
 protocol GatewayAPI: Sendable {
     func feed() async throws -> Feed
+    func summary() async throws -> Summary
     func thread(hostId: String, threadId: String) async throws -> ThreadDetail
     func sendMessage(hostId: String, threadId: String, text: String) async throws
     func respond(hostId: String, threadId: String, request: RespondRequest) async throws
@@ -68,6 +69,10 @@ struct GatewayClient: GatewayAPI {
         try await call("GET", ["v1", "feed"])
     }
 
+    func summary() async throws -> Summary {
+        try await call("GET", ["v1", "summary"])
+    }
+
     func thread(hostId: String, threadId: String) async throws -> ThreadDetail {
         try await call("GET", ["v1", "threads", hostId, threadId])
     }