only send roll prompt from GM

scripts/claude-gm.js

@@ -18,7 +18,7 @@ function formatResponse(text) {
 }
 
 Hooks.on("createChatMessage", async (chatData, options, userId) => {
-	if (chatData.speaker?.alias === 'AI DM') return
+	if (!game.user.isGM) return;
 	if(chatData.isRoll){
 		const parts = [];
 		const speaker = chatData.speaker?.alias || "Someone";