Add Set Persistent Admin Notice verb

code/controllers/subsystem/ticker.dm

@@ -127,6 +127,7 @@ SUBSYSTEM_DEF(ticker)
 
 	start_at = world.time + (CONFIG_GET(number/lobby_countdown) * 10)
 	apply_scheduled_pregame_delay() // modular_solaris/code/modules/admin/delay_pregame_on_reboot.dm
+	apply_persistent_admin_notice() // modular_solaris/code/modules/admin/persistent_admin_notice.dm
 	// Offset time drift but start right in the morning of Monday.
 	gametime_offset = 288001
 	return ..()

code/modules/admin/admin_verbs.dm

@@ -78,6 +78,7 @@ GLOBAL_PROTECT(admin_verbs_admin)
 	/datum/admins/proc/toggleguests,	/*toggles whether guests can join the current game*/
 	/datum/admins/proc/announce,		/*priority announce something to all clients.*/
 	/datum/admins/proc/set_admin_notice, /*announcement all clients see when joining the server.*/
+	/datum/admins/proc/set_persistent_admin_notice, /*same as above, but survives a reboot until cleared. modular_solaris/code/modules/admin/persistent_admin_notice.dm*/
 	/client/proc/toggle_game_master,	/*opens the game master panel*/
 	/client/proc/toggle_aghost_invis, /* lets us choose whether our in-game mob goes visible when we aghost (off by default) */
 	/client/proc/admin_ghost,			/*allows us to ghost/reenter body at will*/
@@ -253,6 +254,7 @@ GLOBAL_LIST_INIT(admin_verbs_hideable, list(
 	/datum/admins/proc/toggleguests,
 	/datum/admins/proc/announce,
 	/datum/admins/proc/set_admin_notice,
+	/datum/admins/proc/set_persistent_admin_notice,
 	/client/proc/toggle_aghost_invis,
 	/client/proc/admin_ghost,
 	/client/proc/toggle_view_range,

modular_solaris/code/modules/admin/persistent_admin_notice.dm

@@ -0,0 +1,48 @@
+/// Text of the persistent admin notice, if one has been set. Stored separately from GLOB.admin_notice so it
+/// survives a world restart (GLOB.admin_notice itself is not saved anywhere and always starts blank on boot).
+GLOBAL_VAR_INIT(persistent_admin_notice, load_persistent_admin_notice())
+
+/proc/load_persistent_admin_notice()
+	var/savefile = file("data/persistent_admin_notice.txt")
+	if(!fexists(savefile))
+		return ""
+	return file2text(savefile)
+
+/proc/save_persistent_admin_notice(text)
+	var/savefile = file("data/persistent_admin_notice.txt")
+	fdel(savefile)
+	if(text)
+		WRITE_FILE(savefile, text)
+
+/// Re-applies the persisted notice (if any) into GLOB.admin_notice at round start, reusing the existing
+/// admin_notice display pipeline (new player login message, the Adminnotice check verb, etc.) as-is.
+/// Called once from ticker Initialize() so it's in place before anyone can join.
+/datum/controller/subsystem/ticker/proc/apply_persistent_admin_notice()
+	if(GLOB.persistent_admin_notice)
+		GLOB.admin_notice = GLOB.persistent_admin_notice
+
+/datum/admins/proc/set_persistent_admin_notice()
+	set category = "Server"
+	set name = "Set Persistent Admin Notice"
+	set desc = "Set an announcement that appears to everyone who joins the server, every round, until cleared. Unlike Set Admin Notice, this survives a server reboot."
+	if(!check_rights(0))
+		return
+
+	var/new_notice = input(src, "Set a public notice that persists across round reboots.\nEveryone who joins the server will see it, every round, until this is cleared.\n(Leaving it blank will delete the current persistent notice):", "Set Persistent Notice", GLOB.persistent_admin_notice) as message|null
+	if(new_notice == null)
+		return
+	if(new_notice == GLOB.persistent_admin_notice)
+		return
+
+	GLOB.persistent_admin_notice = new_notice
+	save_persistent_admin_notice(new_notice)
+	GLOB.admin_notice = new_notice // shares the same display pipeline as the round-only notice, so setting/clearing this also updates what's currently shown
+
+	if(new_notice == "")
+		message_admins("[key_name(usr)] removed the persistent admin notice.")
+		log_admin("[key_name(usr)] removed the persistent admin notice.")
+	else
+		message_admins("[key_name(usr)] set the persistent admin notice.")
+		log_admin("[key_name(usr)] set the persistent admin notice:\n[new_notice]")
+		to_world(span_adminnotice("<b>Admin Notice:</b>\n \t [new_notice]"))
+	SSblackbox.record_feedback("tally", "admin_verb", 1, "Set Persistent Admin Notice") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!

roguetown.dme

@@ -3726,6 +3726,7 @@
 #include "modular_solaris\code\game\objects\items\rogueweapons\ranged\handgonne.dm"
 #include "modular_solaris\code\modules\admin\delay_pregame_on_reboot.dm"
 #include "modular_solaris\code\modules\admin\loud_asay.dm"
+#include "modular_solaris\code\modules\admin\persistent_admin_notice.dm"
 #include "modular_solaris\code\modules\clothing\rogueclothes\ammopouch.dm"
 #include "modular_solaris\code\modules\jobs\job_types\roguetown\adventurer\types\antag\smokerat.dm"
 #include "modular_solaris\code\modules\jobs\job_types\roguetown\adventurer\types\combat\ranger.dm"