[MIRROR] Finishes the allocation refactor (#2646)

* Finishes the allocation refactor (#55965)

#53841 continuation
I recall that the reason for infinite stuns and such was that the priority wasn't being cleared properly when something hitched and I fixed it and I don't remember where exactly but it works now (TM)
A variation of this is TMed on TGMC and it works fine

* Finishes the allocation refactor

Co-authored-by: TiviPlus <57223640+TiviPlus@users.noreply.github.com>

code/controllers/subsystem/adjacent_air.dm

@@ -1,6 +1,5 @@
 SUBSYSTEM_DEF(adjacent_air)
 	name = "Atmos Adjacency"
-	flags = SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 	wait = 10
 	priority = FIRE_PRIORITY_ATMOS_ADJACENCY

code/controllers/subsystem/air.dm

@@ -3,7 +3,6 @@ SUBSYSTEM_DEF(air)
 	init_order = INIT_ORDER_AIR
 	priority = FIRE_PRIORITY_AIR
 	wait = 0.5 SECONDS
-	flags = SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
 	var/cached_cost = 0

code/controllers/subsystem/augury.dm

@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(augury)
 	name = "Augury"
-	flags = SS_NO_INIT
+	flags = SS_NO_INIT|SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
 	var/list/watchers = list()

code/controllers/subsystem/dcs.dm

@@ -23,12 +23,12 @@ PROCESSING_SUBSYSTEM_DEF(dcs)
 		return
 	. = elements_by_type[element_id] = new eletype
 
-/****
-	* Generates an id for bespoke elements when given the argument list
-	* Generating the id here is a bit complex because we need to support named arguments
-	* Named arguments can appear in any order and we need them to appear after ordered arguments
-	* We assume that no one will pass in a named argument with a value of null
-	**/
+/**
+ * Generates an id for bespoke elements when given the argument list
+ * Generating the id here is a bit complex because we need to support named arguments
+ * Named arguments can appear in any order and we need them to appear after ordered arguments
+ * We assume that no one will pass in a named argument with a value of null
+ **/
 /datum/controller/subsystem/processing/dcs/proc/GetIdFromArguments(list/arguments)
 	var/datum/element/eletype = arguments[1]
 	var/list/fullid = list("[eletype]")

code/controllers/subsystem/disease.dm

@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(disease)
 	name = "Disease"
-	flags = SS_NO_FIRE
+	flags = SS_NO_FIRE | SS_BACKGROUND
 
 	var/list/active_diseases = list() //List of Active disease in all mobs; purely for quick referencing.
 	var/list/diseases

code/controllers/subsystem/fire_burning.dm

@@ -1,7 +1,7 @@
 SUBSYSTEM_DEF(fire_burning)
 	name = "Fire Burning"
 	priority = FIRE_PRIOTITY_BURNING
-	flags = SS_NO_INIT|SS_BACKGROUND
+	flags = SS_NO_INIT
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
 	var/list/currentrun = list()

code/controllers/subsystem/pai.dm

@@ -1,7 +1,7 @@
 SUBSYSTEM_DEF(pai)
 	name = "pAI"
 
-	flags = SS_NO_INIT|SS_NO_FIRE
+	flags = SS_NO_INIT|SS_NO_FIRE|SS_BACKGROUND
 
 	var/list/candidates = list()
 	var/ghost_spam = FALSE

code/controllers/subsystem/processing/fields.dm

@@ -2,5 +2,5 @@ PROCESSING_SUBSYSTEM_DEF(fields)
 	name = "Fields"
 	wait = 2
 	priority = FIRE_PRIORITY_FIELDS
-	flags = SS_KEEP_TIMING | SS_NO_INIT
+	flags = SS_KEEP_TIMING | SS_NO_INIT | SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME

code/controllers/subsystem/processing/processing.dm

@@ -3,7 +3,7 @@
 SUBSYSTEM_DEF(processing)
 	name = "Processing"
 	priority = FIRE_PRIORITY_PROCESS
-	flags = SS_BACKGROUND|SS_POST_FIRE_TIMING|SS_NO_INIT
+	flags = SS_POST_FIRE_TIMING|SS_NO_INIT
 	wait = 1 SECONDS
 
 	var/stat_tag = "P" //Used for logging

code/controllers/subsystem/processing/wet_floors.dm

@@ -3,5 +3,6 @@ PROCESSING_SUBSYSTEM_DEF(wet_floors)
 	priority = FIRE_PRIORITY_WET_FLOORS
 	wait = 10
 	stat_tag = "WFP" //Used for logging
+	flags = SS_BACKGROUND
 	var/temperature_coeff = 2
 	var/time_ratio = 1.5 SECONDS