Full hosted rooms are refused with IMVU's own full-room code

Co-Authored-By: Claude Opus 5.5 <[email protected]>

internal/hosted/phase2.go

@@ -20,8 +20,11 @@ import (
 	"git.t5de.dev/t5de/t5de-proxy/internal/xmlrpc"
 )
 
-// errorPublicRoomBooted is the client's reason code for being refused a room it was booted from.
-const errorPublicRoomBooted = 4
+// The client's reason codes for refused joins: booted (it shows "booted"), and full (IMVU's own wording).
+const (
+	errorPublicRoomFull   = 5
+	errorPublicRoomBooted = 4
+)
 
 // invite is an invitation the client sent (outgoing, by the local ID the client knows) or got (incoming).
 type invite struct {