Autochangelog Mirror from Virgo (#10195)

code/modules/client/client procs.dm

@@ -333,13 +333,11 @@
 		void = new()
 	screen += void
 
-	// CHOMPAdd Start
-	if((prefs.lastchangelog != changelog_hash) && isnewplayer(src.mob)) //bolds the changelog button on the interface so we know there are updates.
+	if((prefs?.read_preference(/datum/preference/text/lastchangelog) != GLOB.changelog_hash) && isnewplayer(src.mob)) //bolds the changelog button on the interface so we know there are updates.
 		to_chat(src, span_info("You have unread updates in the changelog."))
 		winset(src, "rpane.changelog", "background-color=#eaeaea;font-style=bold")
 		if(CONFIG_GET(flag/aggressive_changelog))
 			src.changes()
-	// CHOMPAdd End
 
 	if(CONFIG_GET(flag/paranoia_logging))
 		var/alert = FALSE //VOREStation Edit start.

code/modules/client/preferences/types/game/misc.dm

@@ -1,3 +1,5 @@
+// Toggles
+
 /// Whether or not to toggle ambient occlusion, the shadows around people
 /datum/preference/toggle/ambient_occlusion
 	category = PREFERENCE_CATEGORY_GAME_PREFERENCES
@@ -93,3 +95,14 @@
 	savefile_key = "obfuscate_job"
 	default_value = FALSE
 	savefile_identifier = PREFERENCE_PLAYER
+
+// Text
+
+/datum/preference/text/lastchangelog
+	category = PREFERENCE_CATEGORY_GAME_PREFERENCES
+	savefile_key = "lastchangelog"
+	savefile_identifier = PREFERENCE_PLAYER
+
+/datum/preference/text/lastchangelog/is_accessible(datum/preferences/preferences)
+	..()
+	return FALSE