ok

code/controllers/configuration/entries/persistence.dm

@@ -15,3 +15,6 @@
 /datum/config_entry/number/persistent_debris_type_max
 	config_entry_value = 2000
 	integer = TRUE
+
+/// Wipe dirty stuff on nuke
+/datum/config_entry/flag/persistent_debris_wipe_on_nuke

code/controllers/subsystem/persistence/cleanable_debris.dm

@@ -63,6 +63,8 @@
 /datum/controller/subsystem/persistence/proc/SaveMapDebris()
 	if(fexists("[get_map_persistence_path()]/debris.json"))
 		fdel("[get_map_persistence_path()]/debris.json")
+	if(CONFIG_GET(flag/persistent_debris_wipe_on_nuke) && SSticker?.mode?.station_was_nuked)
+		return		// local janitor cheers on nukeop team to save some work
 	var/list/data = list()
 	var/list/z_lookup = SSmapping.z_to_station_z_index
 	var/list/debris = RelevantPersistentDebris()