Make the UnreadFeed conform to ArticleFetcher. It now displays articles in the timeline when selected.

Evergreen/MainWindow/Timeline/TimelineViewController.swift

@@ -679,11 +679,8 @@ private extension TimelineViewController {
 
 		for object in representedObjects {
 
-			if let feed = object as? Feed {
+			if let articleFetcher = object as? ArticleFetcher {
-				fetchedArticles.formUnion(feed.fetchArticles())
+				fetchedArticles.formUnion(articleFetcher.fetchArticles())
-			}
-			else if let folder = object as? Folder {
-				fetchedArticles.formUnion(folder.fetchArticles())
 			}
 		}
 

Evergreen/SmartFeeds/UnreadFeed.swift

@@ -7,6 +7,8 @@
 //
 
 import Foundation
+import Account
+import Data
 
 // This just shows the global unread count, which appDelegate already has. Easy.
 
@@ -34,3 +36,20 @@ final class UnreadFeed: PseudoFeed {
 		unreadCount = appDelegate.unreadCount
 	}
 }
+
+extension UnreadFeed: ArticleFetcher {
+
+	func fetchArticles() -> Set<Article> {
+
+		return fetchUnreadArticles()
+	}
+
+	func fetchUnreadArticles() -> Set<Article> {
+
+		var articles = Set<Article>()
+		for account in AccountManager.shared.accounts {
+			articles.formUnion(account.fetchUnreadArticles())
+		}
+		return articles
+	}
+}