Fix leading slashes and turn on linting for it

SpacemanDMM.toml

@@ -1,2 +1,6 @@
 [langserver]
 dreamchecker = true
+
+[code_standards]
+disallow_relative_type_definitions = true
+disallow_relative_proc_definitions = true

code/__HELPERS/unsorted.dm

@@ -1094,7 +1094,7 @@ B --><-- A
 	return closest_atom
 
 
-proc/pick_closest_path(value, list/matches = get_fancy_list_of_atom_types())
+/proc/pick_closest_path(value, list/matches = get_fancy_list_of_atom_types())
 	if (value == FALSE) //nothing should be calling us with a number, so this is safe
 		value = input("Enter type to find (blank for all, cancel to cancel)", "Search for type") as null|text
 		if (isnull(value))

code/game/machinery/hologram.dm

@@ -84,7 +84,7 @@ Possible to do for anyone motivated enough:
 	desc = "It's a floor-mounted device for projecting holographic images. This one will refuse to auto-connect incoming calls."
 	secure = TRUE
 
-obj/machinery/holopad/secure/Initialize()
+/obj/machinery/holopad/secure/Initialize()
 	. = ..()
 	var/obj/item/circuitboard/machine/holopad/board = circuit
 	board.secure = TRUE

code/game/mecha/combat/durand.dm

@@ -91,7 +91,7 @@ Expects a turf. Returns true if the attack should be blocked, false if not.*/
 				. = TRUE
 	return
 
-obj/mecha/combat/durand/attack_generic(mob/user, damage_amount = 0, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, armor_penetration = 0)
+/obj/mecha/combat/durand/attack_generic(mob/user, damage_amount = 0, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, armor_penetration = 0)
 	if(defense_check(user.loc))
 		log_message("Attack absorbed by defense field. Attacker - [user].", LOG_MECHA, color="orange")
 		shield.attack_generic(user, damage_amount, damage_type, damage_flag, sound_effect, armor_penetration)

code/game/objects/items/grenades/festive.dm

@@ -84,7 +84,7 @@
 /obj/item/grenade/firecracker/fire_act(exposed_temperature, exposed_volume)
 	prime()
 
-obj/item/grenade/firecracker/wirecutter_act(mob/living/user, obj/item/I)
+/obj/item/grenade/firecracker/wirecutter_act(mob/living/user, obj/item/I)
 	if(active)
 		return
 	if(det_time)
@@ -96,7 +96,7 @@ obj/item/grenade/firecracker/wirecutter_act(mob/living/user, obj/item/I)
 	else
 		to_chat(user, "<span class='danger'>You've already removed all of the fuse!</span>")
 
-obj/item/grenade/firecracker/preprime(mob/user, delayoverride, msg = TRUE, volume = 80)
+/obj/item/grenade/firecracker/preprime(mob/user, delayoverride, msg = TRUE, volume = 80)
 	var/turf/T = get_turf(src)
 	log_grenade(user, T)
 	if(user)

code/modules/antagonists/_common/antag_datum.dm

@@ -266,7 +266,7 @@ GLOBAL_LIST_EMPTY(antagonists)
 	show_name_in_check_antagonists = TRUE //They're all different
 	var/datum/team/custom_team
 
-datum/antagonist/custom/create_team(datum/team/team)
+/datum/antagonist/custom/create_team(datum/team/team)
 	custom_team = team
 
 /datum/antagonist/custom/get_team()

code/modules/atmospherics/gasmixtures/reactions.dm

@@ -265,13 +265,13 @@ datum/gas_reaction/freonfire
 	name = "Freon combustion"
 	id = "freonfire"
 
-datum/gas_reaction/freonfire/init_reqs()
+/datum/gas_reaction/freonfire/init_reqs()
 	min_requirements = list(
 		/datum/gas/oxygen = MINIMUM_MOLE_COUNT,
 		/datum/gas/freon = MINIMUM_MOLE_COUNT
 		)
 
-datum/gas_reaction/freonfire/react(datum/gas_mixture/air, datum/holder)
+/datum/gas_reaction/freonfire/react(datum/gas_mixture/air, datum/holder)
 	var/energy_released = 0
 	var/old_heat_capacity = air.heat_capacity()
 	var/list/cached_gases = air.gases //this speeds things up because accessing datum vars is slow

code/modules/mining/aux_base_camera.dm

@@ -202,7 +202,7 @@
 	name = "Select Airlock Type"
 	button_icon_state = "airlock_select"
 
-datum/action/innate/aux_base/airlock_type/Activate()
+/datum/action/innate/aux_base/airlock_type/Activate()
 	if(..())
 		return
 
@@ -213,7 +213,7 @@ datum/action/innate/aux_base/window_type
 	name = "Select Window Type"
 	button_icon_state = "window_select"
 
-datum/action/innate/aux_base/window_type/Activate()
+/datum/action/innate/aux_base/window_type/Activate()
 	if(..())
 		return
 	B.RCD.toggle_window_type()
@@ -222,7 +222,7 @@ datum/action/innate/aux_base/place_fan
 	name = "Place Tiny Fan"
 	button_icon_state = "build_fan"
 
-datum/action/innate/aux_base/place_fan/Activate()
+/datum/action/innate/aux_base/place_fan/Activate()
 	if(..())
 		return
 
@@ -244,11 +244,11 @@ datum/action/innate/aux_base/place_fan/Activate()
 	to_chat(owner, "<span class='notice'>Tiny fan placed. [B.fans_remaining] remaining.</span>")
 	playsound(fan_turf, 'sound/machines/click.ogg', 50, TRUE)
 
-datum/action/innate/aux_base/install_turret
+/datum/action/innate/aux_base/install_turret
 	name = "Install Plasma Anti-Wildlife Turret"
 	button_icon_state = "build_turret"
 
-datum/action/innate/aux_base/install_turret/Activate()
+/datum/action/innate/aux_base/install_turret/Activate()
 	if(..())
 		return
 

code/modules/mob/living/simple_animal/hostile/bear.dm

@@ -173,7 +173,7 @@ mob/living/simple_animal/hostile/bear/butter //The mighty companion to Cak. Seve
 		to_chat(src, "<span class='notice'>Your name is now <b>\"new_name\"</b>!</span>")
 		name = new_name
 
-mob/living/simple_animal/hostile/bear/butter/AttackingTarget() //Makes some attacks by the butter bear slip those who dare cross its path.
+/mob/living/simple_animal/hostile/bear/butter/AttackingTarget() //Makes some attacks by the butter bear slip those who dare cross its path.
 	if(isliving(target))
 		var/mob/living/L = target
 		if((L.mobility_flags & MOBILITY_STAND))

code/modules/mob/living/simple_animal/hostile/hostile.dm

@@ -466,7 +466,7 @@
 			DestroyObjectsInDirection(direction)
 
 
-mob/living/simple_animal/hostile/proc/DestroySurroundings() // for use with megafauna destroying everything around them
+/mob/living/simple_animal/hostile/proc/DestroySurroundings() // for use with megafauna destroying everything around them
 	if(environment_smash)
 		EscapeConfinement()
 		for(var/dir in GLOB.cardinals)

code/modules/mob/living/simple_animal/hostile/mining_mobs/basilisk.dm

@@ -81,7 +81,7 @@
 			projectiletype = /obj/projectile/temp/basilisk/heated
 			addtimer(CALLBACK(src, .proc/cool_down), 3000)
 
-mob/living/simple_animal/hostile/asteroid/basilisk/proc/cool_down()
+/mob/living/simple_animal/hostile/asteroid/basilisk/proc/cool_down()
 	visible_message("<span class='warning'>[src] appears to be cooling down...</span>")
 	if(stat != DEAD)
 		icon_state = "Basilisk"

code/modules/mob/living/simple_animal/hostile/space_dragon.dm

@@ -209,7 +209,7 @@
   * Arguments:
   * * turf/T - The turf to trigger the effects on.
   */
-mob/living/simple_animal/hostile/space_dragon/proc/dragon_fire_line(turf/T)
+/mob/living/simple_animal/hostile/space_dragon/proc/dragon_fire_line(turf/T)
 	var/list/hit_list = list()
 	hit_list += src
 	new /obj/effect/hotspot(T)

code/modules/mob/living/simple_animal/hostile/venus_human_trap.dm

@@ -188,5 +188,5 @@
   * Arguments:
   * * datum/beam/vine - The vine to be removed from the list.
   */
-mob/living/simple_animal/hostile/venus_human_trap/proc/remove_vine(datum/beam/vine, force)
+/mob/living/simple_animal/hostile/venus_human_trap/proc/remove_vine(datum/beam/vine, force)
 	vines -= vine

code/modules/projectiles/guns/ballistic/rifle.dm

@@ -16,11 +16,11 @@
 	bolt_drop_sound = 'sound/weapons/gun/rifle/bolt_in.ogg'
 	tac_reloads = FALSE
 
-obj/item/gun/ballistic/rifle/update_overlays()
+/obj/item/gun/ballistic/rifle/update_overlays()
 	. = ..()
 	. += "[icon_state]_bolt[bolt_locked ? "_locked" : ""]"
 
-obj/item/gun/ballistic/rifle/rack(mob/user = null)
+/obj/item/gun/ballistic/rifle/rack(mob/user = null)
 	if (bolt_locked == FALSE)
 		to_chat(user, "<span class='notice'>You open the bolt of \the [src].</span>")
 		playsound(src, rack_sound, rack_sound_volume, rack_sound_vary)
@@ -30,12 +30,12 @@ obj/item/gun/ballistic/rifle/rack(mob/user = null)
 		return
 	drop_bolt(user)
 
-obj/item/gun/ballistic/rifle/can_shoot()
+/obj/item/gun/ballistic/rifle/can_shoot()
 	if (bolt_locked)
 		return FALSE
 	return ..()
 
-obj/item/gun/ballistic/rifle/attackby(obj/item/A, mob/user, params)
+/obj/item/gun/ballistic/rifle/attackby(obj/item/A, mob/user, params)
 	if (!bolt_locked)
 		to_chat(user, "<span class='notice'>The bolt is closed!</span>")
 		return

code/modules/reagents/reagent_containers/chem_pack.dm

@@ -33,7 +33,7 @@
 		. += "<span class='notice'>Alt-click to seal it.</span>"
 
 
-obj/item/reagent_containers/chem_pack/attack_self(mob/user)
+/obj/item/reagent_containers/chem_pack/attack_self(mob/user)
 	if(sealed)
 		return
 	..()

code/modules/research/xenobiology/crossbreeding/_status_effects.dm

@@ -223,7 +223,7 @@
 	duration = -1
 	alert_type = null
 
-datum/status_effect/rebreathing/tick()
+/datum/status_effect/rebreathing/tick()
 	owner.adjustOxyLoss(-6, 0) //Just a bit more than normal breathing.
 
 ///////////////////////////////////////////////////////
@@ -505,7 +505,7 @@ datum/status_effect/rebreathing/tick()
 	ADD_TRAIT(owner, TRAIT_NOSLIPWATER, "slimestatus")
 	return ..()
 
-datum/status_effect/stabilized/blue/on_remove()
+/datum/status_effect/stabilized/blue/on_remove()
 	REMOVE_TRAIT(owner, TRAIT_NOSLIPWATER, "slimestatus")
 
 /datum/status_effect/stabilized/metal

code/modules/shuttle/spaceship_navigation_beacon.dm

@@ -21,7 +21,7 @@
 	. = ..()
 	SSshuttle.beacons |= src
 
-obj/machinery/spaceship_navigation_beacon/emp_act()
+/obj/machinery/spaceship_navigation_beacon/emp_act()
 	locked = TRUE
 
 /obj/machinery/spaceship_navigation_beacon/Destroy()