AI multicamera mode fixes (#91105)

## About The Pull Request
Fixes https://github.com/tgstation/tgstation/issues/38307 
Fixes https://github.com/tgstation/tgstation/issues/77159
Fixes https://github.com/tgstation/tgstation/issues/80465
Fixes https://github.com/tgstation/tgstation/issues/85048
Fixes https://github.com/tgstation/tgstation/issues/90748
Fixes https://github.com/tgstation/tgstation/issues/78878

Fixes camera static being hidden in multicamera mode. Also fixes borders
not being drawn


![image](https://github.com/user-attachments/assets/4eae97b3-b8ac-42de-8cb2-36306f949b57)

## Why It's Good For The Game
Wallhacks bad
## Changelog
🆑

fix: fixed camera static not being drawn for AI in multicamera mode.
Also fixes secondary AI cameras not existing and gives them their AI
name

/🆑

code/_onclick/hud/picture_in_picture.dm

@@ -53,7 +53,8 @@
 	standard_background = new /mutable_appearance()
 	standard_background.icon = 'icons/hud/pic_in_pic.dmi'
 	standard_background.icon_state = "background"
-	standard_background.layer = SPACE_LAYER
+	standard_background.layer = LOWER_FLOOR_LAYER
+	standard_background.appearance_flags = PIXEL_SCALE
 
 /atom/movable/screen/movable/pic_in_pic/proc/add_buttons()
 	var/static/mutable_appearance/move_tab

code/_onclick/hud/rendering/plane_masters/plane_master_subtypes.dm

@@ -376,6 +376,11 @@
 /atom/movable/screen/plane_master/camera_static/proc/eye_changed(datum/hud/source, atom/old_eye, atom/new_eye)
 	SIGNAL_HANDLER
 
+	if(istype(new_eye, /obj/effect/landmark/ai_multicam_room))
+		if(force_hidden)
+			unhide_plane(source.mymob)
+		return
+
 	if(!iscameramob(new_eye))
 		if(!force_hidden)
 			hide_plane(source.mymob)

code/modules/mob/eye/camera/camera.dm

@@ -45,7 +45,6 @@
  */
 /mob/eye/camera/proc/setLoc(destination, force_update = FALSE)
 	SHOULD_NOT_SLEEP(TRUE)
-	SHOULD_CALL_PARENT(TRUE)
 
 	destination = get_turf(destination)
 	if(!force_update && (destination == get_turf(src)))

code/modules/mob/living/silicon/ai/freelook/cameranet.dm

@@ -79,7 +79,7 @@ GLOBAL_DATUM_INIT(cameranet, /datum/cameranet, new)
 		var/list/add = visibleChunks - eye.visibleCameraChunks
 
 		for(var/datum/camerachunk/chunk as anything in remove)
-			chunk.remove(eye, FALSE)
+			chunk.remove(eye)
 
 		for(var/datum/camerachunk/chunk as anything in add)
 			chunk.add(eye)

code/modules/mob/living/silicon/ai/freelook/chunk.dm

@@ -44,7 +44,7 @@
 	seenby -= eye
 
 	var/client/client = eye.GetViewerClient()
-	if(client && eye.use_visibility)
+	if(client && eye.use_visibility && seenby.len == 0)
 		client.images -= active_static_images
 
 /// Called when a chunk has changed. I.E: A wall was deleted.
@@ -56,7 +56,7 @@
 /**
  * Updates the chunk, makes sure that it doesn't update too much. If the chunk isn't being watched it will
  * instead be flagged to update the next time an AI Eye moves near it.
- * 
+ *
  * update_delay_buffer is used for cameras that are moving around, which are cyborg inbuilt cameras and
  * mecha onboard cameras. This buffer should be usually lower than UPDATE_BUFFER_TIME because
  * otherwise a moving camera can run out of its own view before updating static.

code/modules/mob/living/silicon/ai/multicam.dm

@@ -26,7 +26,8 @@
 	highlighted_background = new /mutable_appearance()
 	highlighted_background.icon = 'icons/hud/pic_in_pic.dmi'
 	highlighted_background.icon_state = "background_highlight"
-	highlighted_background.layer = SPACE_LAYER
+	highlighted_background.layer = LOWER_FLOOR_LAYER
+	highlighted_background.appearance_flags = PIXEL_SCALE
 
 /atom/movable/screen/movable/pic_in_pic/ai/add_background()
 	if((width > 0) && (height > 0))
@@ -87,6 +88,8 @@
 	icon = 'icons/hud/pic_in_pic.dmi'
 	icon_state = "room_background"
 	turf_flags = NOJAUNT
+	plane = -19
+	layer = SPACE_LAYER
 
 /turf/open/ai_visible/Initialize(mapload)
 	. = ..()
@@ -148,7 +151,11 @@ GLOBAL_DATUM(ai_camera_room_landmark, /obj/effect/landmark/ai_multicam_room)
 		..()
 
 /mob/eye/camera/ai/pic_in_pic/setLoc(turf/destination, force_update = FALSE)
-	. = ..()
+	if (destination)
+		abstract_move(destination)
+	else
+		moveToNullspace()
+	update_visibility()
 	update_camera_telegraphing()
 	update_ai_detect_hud()
 
@@ -215,6 +222,7 @@ GLOBAL_DATUM(ai_camera_room_landmark, /obj/effect/landmark/ai_multicam_room)
 	C.set_view_size(3, 3, FALSE)
 	C.set_view_center(get_turf(eyeobj))
 	C.set_ai(src)
+	C.aiEye.name = "[name] (Secondary AI Eye)"
 	if(!silent)
 		to_chat(src, span_notice("Added new multicamera window."))
 	return C