Individual Logs now follow the client around automatically (#37790)

The logging is now stored in the persistent client/player_details datum,
that will survive an entire round

The existing mob log is retained and a new admin verb is added to access
it. It will only show logs for the mob in question, across all players
who possibly spent time in that mob

A new log type is added that tracks the mobs the player changes across
into and the times they occured, to better help admins manage complex
situations, this also appears in the mob log as a record of the players
who entered/exited control of the mob

code/modules/mob/dead/observer/observer.dm

@@ -79,7 +79,6 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 	var/mob/body = loc
 	if(ismob(body))
 		T = get_turf(body)				//Where is the body located?
-		logging = body.logging			//preserve our logs by copying them to our ghost
 
 		gender = body.gender
 		if(body.mind && body.mind.name)

code/modules/mob/login.dm

@@ -48,7 +48,4 @@
 			for(var/datum/action/A in client.player_details.player_actions)
 				A.Grant(src)
 
-	if(!GLOB.individual_log_list[ckey])
-		GLOB.individual_log_list[ckey] = logging
-	else
-		logging = GLOB.individual_log_list[ckey]
+	log_message("Client [key_name(src)] has taken ownership of mob [src]", INDIVIDUAL_OWNERSHIP_LOG)

code/modules/mob/logout.dm

@@ -1,4 +1,5 @@
 /mob/Logout()
+	log_message("[key_name(src)] is no longer owning mob [src]", INDIVIDUAL_OWNERSHIP_LOG)
 	SStgui.on_logout(src)
 	unset_machine()
 	GLOB.player_list -= src
@@ -8,4 +9,4 @@
 	if(loc)
 		loc.on_log(FALSE)
 
-	return TRUE
+	return TRUE

code/modules/mob/mob.dm

@@ -785,6 +785,7 @@
 //This will update a mob's name, real_name, mind.name, GLOB.data_core records, pda, id and traitor text
 //Calling this proc without an oldname will only update the mob and skip updating the pda, id and records ~Carn
 /mob/proc/fully_replace_character_name(oldname,newname)
+	log_message("[src] name changed from [oldname] to [newname]", INDIVIDUAL_OWNERSHIP_LOG)
 	if(!newname)
 		return 0
 	real_name = newname

code/modules/mob/mob_helpers.dm

@@ -477,12 +477,18 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 	if(!LAZYLEN(message) || !message_type)
 		return
 
+	if(client)
+		if(!islist(client.player_details.logging[message_type]))
+			client.player_details.logging[message_type] = list()
+
 	if(!islist(logging[message_type]))
 		logging[message_type] = list()
 
 	var/list/timestamped_message = list("[LAZYLEN(logging[message_type]) + 1]\[[time_stamp()]\] [key_name(src)]" = message)
 
 	logging[message_type] += timestamped_message
+	if(client)
+		client.player_details.logging[message_type] += timestamped_message
 
 /mob/proc/can_hear()
 	. = TRUE