Atrocinator module stop crashing the servers please (#93141)

## About The Pull Request

Fixes #91448 a high priority issue

Fixes infinite loop causing severe time dilation when using atrocinator
modsuit module while fireman carrying someone - But the underlying code
does need a proper fix.

**How it broke**

1. Atrocinator calls zFall
2. Redirects to carrier 
3. Carrier moves 
4. Triggers signal on wearer 
5. Infinite recursion 
6. Server death mass hysteria

**How this fixes it**

- Stops buckling to player while module is active & stops turning on
module if already buckled

**Testing Screenshots**
<img width="181" height="179" alt="image"
src="https://github.com/user-attachments/assets/e92495f6-6b5c-44cf-854f-bb6ea8ae823d"
/>
<img width="262" height="220" alt="image"
src="https://github.com/user-attachments/assets/592dc6b8-4c92-4835-9092-b52983ea1eb4"
/>
<img width="617" height="45" alt="image"
src="https://github.com/user-attachments/assets/2590c435-deed-4593-8ad8-eb7a95929079"
/>
<img width="355" height="192" alt="image"
src="https://github.com/user-attachments/assets/20f8a950-78da-4b8f-a70b-c1587942dbed"
/>



## Why It's Good For The Game

- Stops lagging the servers to near death

## Changelog
🆑
fix: Atrocinator modsuit module no longer lets you do a firemans carry
to prevent lag spikes
/🆑

---------

Co-authored-by: loganuk <falseemail@aol.com>

code/modules/mod/modules/modules_maint.dm

@@ -317,10 +317,16 @@
 	var/you_fucked_up = FALSE
 
 /obj/item/mod/module/atrocinator/on_activation(mob/activator)
+	// Auto-unbuckle anyone being carried to avoid lag issues
+	if(length(mod.wearer.buckled_mobs))
+		mod.wearer.visible_message("As [mod.wearer] flips, [mod.wearer.buckled_mobs[1]] flies off of [mod.wearer.p_their()] back!")
+		mod.wearer.unbuckle_all_mobs()
+
 	playsound(src, 'sound/effects/curse/curseattack.ogg', 50)
 	mod.wearer.AddElement(/datum/element/forced_gravity, NEGATIVE_GRAVITY)
 	RegisterSignal(mod.wearer, COMSIG_MOVABLE_MOVED, PROC_REF(check_upstairs))
 	RegisterSignal(mod.wearer, COMSIG_MOB_SAY, PROC_REF(on_talk))
+	RegisterSignal(mod.wearer, COMSIG_MOVABLE_PREBUCKLE, PROC_REF(on_someone_buckled))
 	ADD_TRAIT(mod.wearer, TRAIT_SILENT_FOOTSTEPS, REF(src))
 	passtable_on(mod.wearer, REF(src))
 	check_upstairs() //todo at some point flip your screen around
@@ -337,6 +343,7 @@
 	qdel(mod.wearer.RemoveElement(/datum/element/forced_gravity, NEGATIVE_GRAVITY))
 	UnregisterSignal(mod.wearer, COMSIG_MOVABLE_MOVED)
 	UnregisterSignal(mod.wearer, COMSIG_MOB_SAY)
+	UnregisterSignal(mod.wearer, COMSIG_MOVABLE_PREBUCKLE)
 	step_count = 0
 	REMOVE_TRAIT(mod.wearer, TRAIT_SILENT_FOOTSTEPS, REF(src))
 	passtable_off(mod.wearer, REF(src))
@@ -350,6 +357,16 @@
 	if(you_fucked_up || mod.wearer.has_gravity() > NEGATIVE_GRAVITY)
 		return
 
+	// Prevent infinite loops when being fireman carried - Stack trace if it does
+	if(mod.wearer.buckled)
+		stack_trace("Atrocinator user is buckled despite protections - this shouldn't happen!")
+		return
+
+	// Prevent infinite loops when carrying someone - Stack trace if it does
+	if(length(mod.wearer.buckled_mobs))
+		stack_trace("Atrocinator user is carrying someone despite protections - this shouldn't happen!")
+		return
+
 	var/turf/open/current_turf = get_turf(mod.wearer)
 	var/turf/open/openspace/turf_above = get_step_multiz(mod.wearer, UP)
 	if(current_turf && istype(turf_above))
@@ -384,6 +401,14 @@
 	SIGNAL_HANDLER
 	speech_args[SPEECH_SPANS] |= "upside_down"
 
+/// Prevent someone from being buckled to the wearer while atrocinator is active
+/obj/item/mod/module/atrocinator/proc/on_someone_buckled(datum/source, mob/living/buckled_mob, mob/living/buckler)
+	SIGNAL_HANDLER
+	balloon_alert(buckler, "[buckler == mod.wearer ? "you're" : "they're"] upside down!")
+	return COMPONENT_BLOCK_BUCKLE
+
+
+
 /obj/item/mod/module/recycler/donk/safe
 	name = "MOD foam dart recycler module"
 	desc = "A mod module that collects and repackages fired foam darts into half-sized ammo boxes. \