updated layout for webmail

internal/mailstore/rules.go

@@ -35,10 +35,10 @@ func (s *Store) ApplyRules(mailboxID int64, headers map[string]string) (FilterAc
 		case "move_to_folder":
 			return FilterAction{Folder: r.ActionValue}, nil
 		case "mark_as_spam":
-			// Reuses the same Spam folder score-based quarantine already delivers
+			// Reuses the same Junk folder score-based quarantine already delivers
 			// into (see smtpserver/session.go) — from the mailbox owner's
-			// perspective it's the same "goes to Spam" outcome either way.
-			return FilterAction{Folder: "Spam"}, nil
+			// perspective it's the same "goes to Junk" outcome either way.
+			return FilterAction{Folder: "Junk"}, nil
 		case "delete":
 			return FilterAction{Drop: true}, nil
 		case "mark_read":