Large Variety Of Hard Dels (#21834)

I spent the entirety of today's event looking at hard dels with my new
digital minions. This was *nearly* every Hard Del that came up during
2/7/2026's event. It turns out that AI is extremely well suited to
hunting down circular references like this across an entire repo. This
PR was made with Antigravity-Gemini3Pro.

I have not yet tested this PR.

---------

Signed-off-by: VMSolidus <evilexecutive@gmail.com>
Co-authored-by: Wildkins <john.wildkins@gmail.com>

code/modules/modular_computers/file_system/programs/_program.dm

@@ -18,6 +18,10 @@
 	..()
 	src.program = program
 
+/datum/nano_module/program/Destroy()
+	program = null
+	return ..()
+
 /datum/topic_manager/program
 	var/datum/program
 
@@ -25,6 +29,10 @@
 	..()
 	src.program = program
 
+/datum/topic_manager/program/Destroy()
+	program = null
+	return ..()
+
 // Calls forwarded to PROGRAM itself should begin with "PRG_"
 // Calls forwarded to COMPUTER running the program should begin with "PC_"
 /datum/topic_manager/program/Topic(href, href_list)