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>

dDashboardServer/routes/CMakeLists.txt

@@ -52,6 +52,7 @@ set(DASHBOARDROUTES_SOURCES
 	"PublicRoutes.cpp"
 	"Showcase.cpp"
 	"FeaturedProperties.cpp"
+	"ContrabandRoutes.cpp"
 	"PasswordRecovery.cpp"
 	"PrometheusMetrics.cpp"
 	"../email/SmtpClient.cpp"