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/Route.swift

@@ -0,0 +1,42 @@
+// Screens the app can open, and the `wristcode://` URLs the complication uses to open them.
+
+import Foundation
+
+enum Route: Hashable, Sendable {
+    case thread(hostId: String, threadId: String)
+    case newThread
+
+    static let scheme = "wristcode"
+
+    /// `wristcode://thread/<hostId>/<threadId>` or `wristcode://new`.
+    var url: URL {
+        var components = URLComponents()
+        components.scheme = Self.scheme
+        switch self {
+        case let .thread(hostId, threadId):
+            components.host = "thread"
+            components.percentEncodedPath = "/" + [hostId, threadId]
+                .map { $0.addingPercentEncoding(withAllowedCharacters: .alphanumerics) ?? $0 }
+                .joined(separator: "/")
+        case .newThread:
+            components.host = "new"
+        }
+        return components.url!
+    }
+
+    /// The route a `wristcode://` URL names, or nil when it names none.
+    init?(url: URL) {
+        guard url.scheme == Self.scheme,
+              let components = URLComponents(url: url, resolvingAgainstBaseURL: false)
+        else { return nil }
+        let parts = components.percentEncodedPath.split(separator: "/").map { $0.removingPercentEncoding ?? String($0) }
+        switch components.host {
+        case "thread" where parts.count == 2 && parts.allSatisfy { !$0.isEmpty }:
+            self = .thread(hostId: parts[0], threadId: parts[1])
+        case "new":
+            self = .newThread
+        default:
+            return nil
+        }
+    }
+}