iOS: wire node services and tests

apps/ios/Sources/Calendar/CalendarService.swift

@@ -0,0 +1,66 @@
+import EventKit
+import Foundation
+import OpenClawKit
+
+final class CalendarService: CalendarServicing {
+    func events(params: OpenClawCalendarEventsParams) async throws -> OpenClawCalendarEventsPayload {
+        let store = EKEventStore()
+        let status = EKEventStore.authorizationStatus(for: .event)
+        let authorized = await Self.ensureAuthorization(store: store, status: status)
+        guard authorized else {
+            throw NSError(domain: "Calendar", code: 1, userInfo: [
+                NSLocalizedDescriptionKey: "CALENDAR_PERMISSION_REQUIRED: grant Calendar permission",
+            ])
+        }
+
+        let (start, end) = Self.resolveRange(
+            startISO: params.startISO,
+            endISO: params.endISO)
+        let predicate = store.predicateForEvents(withStart: start, end: end, calendars: nil)
+        let events = store.events(matching: predicate)
+        let limit = max(1, min(params.limit ?? 50, 500))
+        let selected = Array(events.prefix(limit))
+
+        let formatter = ISO8601DateFormatter()
+        let payload = selected.map { event in
+            OpenClawCalendarEventPayload(
+                identifier: event.eventIdentifier ?? UUID().uuidString,
+                title: event.title ?? "(untitled)",
+                startISO: formatter.string(from: event.startDate),
+                endISO: formatter.string(from: event.endDate),
+                isAllDay: event.isAllDay,
+                location: event.location,
+                calendarTitle: event.calendar.title)
+        }
+
+        return OpenClawCalendarEventsPayload(events: payload)
+    }
+
+    private static func ensureAuthorization(store: EKEventStore, status: EKAuthorizationStatus) async -> Bool {
+        switch status {
+        case .authorized:
+            return true
+        case .notDetermined:
+            return await withCheckedContinuation { cont in
+                store.requestAccess(to: .event) { granted, _ in
+                    cont.resume(returning: granted)
+                }
+            }
+        case .restricted, .denied:
+            return false
+        case .fullAccess:
+            return true
+        case .writeOnly:
+            return false
+        @unknown default:
+            return false
+        }
+    }
+
+    private static func resolveRange(startISO: String?, endISO: String?) -> (Date, Date) {
+        let formatter = ISO8601DateFormatter()
+        let start = startISO.flatMap { formatter.date(from: $0) } ?? Date()
+        let end = endISO.flatMap { formatter.date(from: $0) } ?? start.addingTimeInterval(7 * 24 * 3600)
+        return (start, end)
+    }
+}