feat: contraband list with flagging and optional removal

Staff list contraband items on a new dashboard page (item search, reason, flag or flag and remove;
contraband_manage to edit, reports_view to see). World servers check every inventory when a
character loads and every item a player receives: each find is an economy flag of the new kind
Contraband, shown with the other flags and in the character's related data. Items marked for
removal are taken away, with a character snapshot kept first so they can be given back, an audit
entry and a mail or chat message telling the player why. Staff are skipped unless
contraband_ignore_staff is off. Worlds reload the list when it changes (RELOAD_CONTRABAND, added
at the end of ePlayerAction).

Fixes #1563

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dWorldServer/WorldServer.cpp

@@ -6,6 +6,7 @@
 #include "master/PlayerAction.h"
 #include "master/MessageCapture.h"
 #include "MessageInspector.h"
+#include "Contraband.h"
 #include "LiveEvents.h"
 #include <iostream>
 #include <string>
@@ -952,6 +953,9 @@ void LoadPlayer(const SystemAddress& sysAddr) {
 				}
 			}
 
+			// Contraband is flagged (and removed if its entry says so) before the character is saved and sent
+			Contraband::CheckOnLoad(player);
+
 			// Update the characters xml to ensure the update above is not only saved, but so the client picks up on the changes.
 			c->SaveXMLToDatabase();