Rebrand welcome messages and re-enable drop-roll debug logging

Welcome message default/example changed from "Welcome to ROSE" to
"Welcome to ROSS", and the hardcoded post-login system message
replaced with a ROSS-specific credit line.

Also re-enable the codedebug SendPM lines in GetNewDrop that report
the raw randv/money/zulyrate/item/itemrate values behind each
zuly-vs-item roll (previously commented out) -- needed to diagnose
in-game why item drops are still rare/absent after the drop-rate and
item-index fixes, without guessing at STB drop-table values blind.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Src/World Server/worldpackets.cpp

@@ -336,7 +336,7 @@ bool CWorldServer::pakDoIdentify( CPlayer *thisclient, CPacket *P )
 	ADDSTRING  ( pak, Config.WELCOME_MSG );
 	ADDBYTE    ( pak, 0 );
 	thisclient->client->SendPacket( &pak );
-	SendSysMsg( thisclient, "Pre-Evolution server presented by SpiritFox productions and Kuro-Tejina " );
+	SendSysMsg( thisclient, "Rush On Seven Slops - Pre-Evo Server based on KTROSE, proudly fcked up by Claude " );
 	thisclient->SetStats( );
 
 	if(thisclient->Session->award != 0)