Moves Reboot timer to the game screen (#95357)

## About The Pull Request

Since I'm trying to move away from the stat panel as part of my project
here - https://hackmd.io/443_dE5lRWeEAp9bjGcKYw?view - I thought the
reboot timer should be moved out before the stat panel could be made
optional, due to its importance to post-round players (especially to
know if the round is rebooted).

Once the round is over the whole screen kinda becomes pointless, so we
can take as much screen space as we can.

I put this under the tooltips, using similar behavior to it, like the
layer & outline.

This is inspired by the Goon roundend, which does pretty much 1:1 what
this is.

#### Goon's, for reference:

<img width="1397" height="787" alt="image"
src="https://github.com/user-attachments/assets/309b5d6e-c4dd-4f6f-8b83-2256eecd4569"
/>

#### Ours:



https://github.com/user-attachments/assets/b14efae2-e280-47e9-b3db-f57b2060cce7


It's also non-widescreen friendly


## Why It's Good For The Game

Moving things away from the stat panel and to being more player visible
is a positive IMO.
It's also a necessary step to taking away from reliance away from said
stat panel.

## Changelog

🆑
add: The endround timer telling you when a reboot is happening has been
taken out of the stat panel and is instead text over your screen
(similar to Goon)
/🆑

code/controllers/subsystem/statpanel.dm

@@ -48,14 +48,6 @@ SUBSYSTEM_DEF(statpanels)
 			if(ETA)
 				global_data += "[ETA] [SSshuttle.emergency.getTimerStr()]"
 
-		if(SSticker.reboot_timer)
-			var/reboot_time = timeleft(SSticker.reboot_timer)
-			if(reboot_time)
-				global_data += "Reboot: [DisplayTimeText(reboot_time, 1)]"
-		// admin must have delayed round end
-		else if(SSticker.ready_for_reboot)
-			global_data += "Reboot: DELAYED"
-
 		src.currentrun = GLOB.clients.Copy()
 		mc_data = null
 

code/controllers/subsystem/ticker.dm

@@ -5,7 +5,7 @@ SUBSYSTEM_DEF(ticker)
 	name = "Ticker"
 	priority = FIRE_PRIORITY_TICKER
 	flags = SS_KEEP_TIMING
-	runlevels = RUNLEVEL_LOBBY | RUNLEVEL_SETUP | RUNLEVEL_GAME
+	runlevels = RUNLEVEL_LOBBY | RUNLEVEL_SETUP | RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
 	/// state of current round (used by process()) Use the defines GAME_STATE_* !
 	var/current_state = GAME_STATE_STARTUP
@@ -69,6 +69,8 @@ SUBSYSTEM_DEF(ticker)
 	/// Why an emergency shuttle was called
 	var/emergency_reason
 
+	///The display of how much time is left before a reboot, given to all clients post-game.
+	var/atom/movable/screen/reboot_timer/reboot_hud
 	/// ID of round reboot timer, if it exists
 	var/reboot_timer = null
 
@@ -204,6 +206,13 @@ SUBSYSTEM_DEF(ticker)
 				declare_completion(force_ending)
 				Master.SetRunLevel(RUNLEVEL_POSTGAME)
 
+		if(GAME_STATE_FINISHED)
+			if(ready_for_reboot)
+				if(isnull(reboot_timer))
+					reboot_hud.maptext = MAPTEXT_PIXELLARI("<center>Server reboot \n\ DELAYED</center>")
+				else
+					reboot_hud.maptext = MAPTEXT_PIXELLARI("<center>Server rebooting in:\n\ [DisplayTimeText(timeleft(SSticker.reboot_timer), 1)]</center>")
+
 /// Checks if the round should be ending, called every ticker tick
 /datum/controller/subsystem/ticker/proc/check_finished()
 	if(!setup_done)
@@ -833,6 +842,8 @@ SUBSYSTEM_DEF(ticker)
 
 	var/start_wait = world.time
 	UNTIL(round_end_sound_sent || (world.time - start_wait) > (delay * 2)) //don't wait forever
+	if(!isnull(reboot_timer)) //Override existing reboot timers.
+		deltimer(reboot_timer)
 	reboot_timer = addtimer(CALLBACK(src, PROC_REF(reboot_callback), reason, end_string), delay - (world.time - start_wait), TIMER_STOPPABLE)