Moves the sound resource into the Shared Resources folder.

Moves the audio filename reference into the AppAssets struct to make it less stringly typed and centralise access.

Mac/AppAssets.swift

@@ -295,4 +295,9 @@ struct AppAssets {
 		}
 	}
 	
+	static var notificationSoundBlipFileName: String = {
+		return "notificationSoundBlip.caf"
+	}()
+
+	
 }

NetNewsWire.xcodeproj/project.pbxproj

@@ -1860,6 +1860,7 @@
 		511D43CE231FA51100FB1562 /* Resources */ = {
 			isa = PBXGroup;
 			children = (
+				DDE6A35028E8741F00612823 /* notificationSoundBlip.caf */,
 				DFD6AACB27ADE80900463FAD /* NewsFax.nnwtheme */,
 				51DEE81126FB9233006DAA56 /* Appanoose.nnwtheme */,
 				51077C5727A86D16000C71DB /* Hyperlegible.nnwtheme */,
@@ -2742,7 +2743,6 @@
 				514219572353C28900E07E2C /* main_ios.js */,
 				17D7586C2679C21700B17787 /* NetNewsWire-iOS-Bridging-Header.h */,
 				84C9FC9B2262A1A900D921D6 /* Assets.xcassets */,
-				DDE6A35028E8741F00612823 /* notificationSoundBlip.caf */,
 				84C9FC9C2262A1A900D921D6 /* Info.plist */,
 				84BB0F812333426400DED65E /* NetNewsWire.entitlements */,
 				51F805ED24284C1C0022C792 /* NetNewsWire-dev.entitlements */,

Shared/UserNotifications/UserNotificationManager.swift

@@ -63,7 +63,7 @@ private extension UserNotificationManager {
 		content.body = ArticleStringFormatter.truncatedSummary(article)
 		content.threadIdentifier = webFeed.webFeedID
 		//	https://freesound.org/people/cabled_mess/sounds/350862/
-		content.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "notificationSoundBlip.caf"))
+		content.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: AppAssets.notificationSoundBlipFileName))
 		content.userInfo = [UserInfoKey.articlePath: article.pathUserInfo]
 		content.categoryIdentifier = "NEW_ARTICLE_NOTIFICATION_CATEGORY"
 		if let attachment = thumbnailAttachment(for: article, webFeed: webFeed) {

iOS/AppAssets.swift

@@ -325,4 +325,8 @@ struct AppAssets {
 		}
 	}
 	
+	static var notificationSoundBlipFileName: String = {
+		return "notificationSoundBlip.caf"
+	}()
+	
 }