feat(agent): add opt-in push notifications

ios/Apps/Sybil/Info.plist

@@ -2,6 +2,10 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>SybilAPNSEnvironment</key>
+	<string>$(SYBIL_APNS_ENVIRONMENT)</string>
+	<key>UIBackgroundModes</key>
+	<array><string>remote-notification</string></array>
 	<!-- macOS-only: keep the global Quick Question shortcut available with no windows. -->
 	<key>NSSupportsAutomaticTermination</key>
 	<false/>

ios/Apps/Sybil/Sources/SybilApp.swift

@@ -1,6 +1,7 @@
 import Sybil
 import SwiftUI
 import UIKit
+import UserNotifications
 
 @main
 struct SybilApp: App
@@ -18,11 +19,13 @@ struct SybilApp: App
 }
 
 @MainActor
-final class SybilAppDelegate: NSObject, UIApplicationDelegate {
+final class SybilAppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate {
     func application(
         _ application: UIApplication,
         didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]? = nil
     ) -> Bool {
+        UNUserNotificationCenter.current().delegate = self
+        SybilPushNotifications.launchFixtureIfRequested()
         SybilHomeScreenQuickActionHandler.configureQuickActions()
         #if targetEnvironment(macCatalyst)
         SybilMacQuickQuestionController.shared.start()
@@ -30,6 +33,31 @@ final class SybilAppDelegate: NSObject, UIApplicationDelegate {
         return true
     }
 
+    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
+        SybilPushNotifications.didRegister(deviceToken: deviceToken)
+    }
+
+    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
+        SybilPushNotifications.didFailToRegister()
+    }
+
+    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
+                     fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
+        SybilPushNotifications.receiveBackground(userInfo: userInfo) { result in completionHandler(result) }
+    }
+
+    nonisolated func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification) async -> UNNotificationPresentationOptions {
+        let event = SybilPushNotifications.Event(userInfo: notification.request.content.userInfo)
+        return await SybilPushNotifications.presentationOptions(event: event)
+    }
+
+    nonisolated func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse) async {
+        if response.actionIdentifier == UNNotificationDefaultActionIdentifier {
+            let event = SybilPushNotifications.Event(userInfo: response.notification.request.content.userInfo)
+            await SybilPushNotifications.didRespond(event: event, identifier: response.notification.request.identifier)
+        }
+    }
+
     #if targetEnvironment(macCatalyst)
     func applicationWillTerminate(_ application: UIApplication) {
         SybilMacQuickQuestionController.shared.stop()
@@ -73,6 +101,9 @@ final class SybilSceneDelegate: NSObject, UIWindowSceneDelegate {
         if let shortcutItem = connectionOptions.shortcutItem {
             _ = SybilHomeScreenQuickActionHandler.handle(shortcutItem)
         }
+        if let response = connectionOptions.notificationResponse, response.actionIdentifier == UNNotificationDefaultActionIdentifier {
+            SybilPushNotifications.didRespond(userInfo: response.notification.request.content.userInfo, identifier: response.notification.request.identifier)
+        }
     }
 
     #if targetEnvironment(macCatalyst)

ios/Apps/Sybil/Sybil.entitlements

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>aps-environment</key>
+    <string>$(SYBIL_APNS_ENVIRONMENT)</string>
+</dict>
+</plist>

ios/Apps/Sybil/project.yml

@@ -5,6 +5,12 @@ targets:
       - iOS
       - macCatalyst
     deploymentTarget: "18.0"
+    attributes:
+      SystemCapabilities:
+        com.apple.Push:
+          enabled: 1
+        com.apple.BackgroundModes:
+          enabled: 1
     sources:
       - Sources
       - Resources
@@ -25,6 +31,9 @@ targets:
         PRODUCT_MODULE_NAME: SybilApp
         DEVELOPMENT_TEAM: DQQH5H6GBD
         CODE_SIGN_STYLE: Automatic
+        "CODE_SIGN_ENTITLEMENTS[sdk=iphoneos*]": Apps/Sybil/Sybil.entitlements
+        "CODE_SIGN_ENTITLEMENTS[sdk=iphonesimulator*]": Apps/Sybil/Sybil.entitlements
+        INFOPLIST_KEY_SybilAPNSEnvironment: "$(SYBIL_APNS_ENVIRONMENT)"
         SWIFT_VERSION: 6.0
         SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD: NO
         TARGETED_DEVICE_FAMILY: "1,2,6"
@@ -41,7 +50,10 @@ targets:
         INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone: UIInterfaceOrientationPortrait
         INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad: UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight
       configs:
+        Debug:
+          SYBIL_APNS_ENVIRONMENT: development
         Release:
+          SYBIL_APNS_ENVIRONMENT: production
           CODE_SIGN_STYLE: Manual
           CODE_SIGN_IDENTITY: Apple Distribution
           "CODE_SIGN_IDENTITY[sdk=iphoneos*]": Apple Distribution