Watch: what changed on Recent cards and the thread screen, search in All threads, a switching complication with Allow and Deny in the Smart Stack, and question options on notifications

watch/WristCodeWidget/RespondIntent.swift

@@ -0,0 +1,37 @@
+// Allow and Deny on the Smart Stack widget. WidgetKit runs the intent without opening the app, then
+// reloads the widget's timeline. A request someone already answered (409) counts as done.
+//
+// The app target compiles this file too, because WaitingView builds the buttons.
+
+import AppIntents
+
+struct RespondIntent: AppIntent {
+    static let title: LocalizedStringResource = "Answer an approval"
+    static let isDiscoverable = false
+
+    @Parameter(title: "Host") var hostId: String
+    @Parameter(title: "Thread") var threadId: String
+    @Parameter(title: "Request") var requestId: String
+    @Parameter(title: "Decision") var decision: String
+
+    init() {}
+
+    init(_ approval: WaitingEntry.Approval, decision: ApprovalDecision) {
+        hostId = approval.hostId
+        threadId = approval.threadId
+        requestId = approval.requestId
+        self.decision = decision.rawValue
+    }
+
+    func perform() async throws -> some IntentResult {
+        guard let api = SharedState.api else { return .result() }
+        do {
+            try await api.respond(
+                hostId: hostId, threadId: threadId,
+                request: .decision(requestId: requestId, decision: ApprovalDecision(rawValue: decision)))
+        } catch let error as GatewayError where error.isStale {
+            // Answered already, on the watch or elsewhere. The reload shows what is next.
+        }
+        return .result()
+    }
+}