Fixes shells unable to be re-used by the AI & an exploit

code/__DEFINES/is_helpers.dm

@@ -157,6 +157,8 @@ GLOBAL_LIST_INIT(turfs_without_ground, typecacheof(list(
 
 #define isclown(A) (istype(A, /mob/living/simple_animal/hostile/retaliate/clown))
 
+#define ismimic(A) (istype(A, /mob/living/simple_animal/hostile/hs13mimic))
+
 GLOBAL_LIST_INIT(shoefootmob, typecacheof(list(
 	/mob/living/carbon/human/,
 	/mob/living/simple_animal/cow,

code/modules/mob/living/living.dm

@@ -873,6 +873,8 @@
 		return 0
 	if(digitalcamo || digitalinvis)
 		return 0
+	if(ismimic(src)) // Are we a mimic? Mimics should not be tracked to prevent AI camera cheese.
+		return 0
 
 	// Now, are they viewable by a camera? (This is last because it's the most intensive check)
 	if(!near_camera(src))

code/modules/mob/living/silicon/robot/death.dm

@@ -21,6 +21,9 @@
 
 	locked = FALSE //unlock cover
 
+	if(connected_ai)
+		deployed = FALSE
+
 	update_canmove()
 	if(!QDELETED(builtInCamera) && builtInCamera.status)
 		builtInCamera.toggle_cam(src,0)

code/modules/mob/living/silicon/robot/robot.dm

@@ -1232,7 +1232,6 @@
 /mob/living/silicon/robot/proc/TryConnectToAI()
 	set_connected_ai(select_active_ai_with_fewest_borgs(z))
 	if(connected_ai)
-		connected_ai.connected_robots += src
 		lawsync()
 		lawupdate = 1
 		return TRUE
@@ -1270,4 +1269,4 @@
 		var/mob/living/silicon/ai/old_ai = .
 		old_ai.connected_robots -= src
 	if(connected_ai)
-		connected_ai.connected_robots |= src
+		connected_ai.connected_robots |= src