Use openrouter

server/utils/create-content.ts

@@ -137,7 +137,7 @@ export const createActivityContent = async ({
   `;
 
   const aiResponse = await openai.responses.create({
-    model: "gpt-5",
+    model: "@preset/ghostwriter",
     input: [{ role: "user", content: prompt }],
     reasoning: {
       effort: "minimal",