consolidate openrouter instance creation

pages/chat/@id/+data.ts

@@ -1,7 +1,7 @@
 import type { PageContextServer } from "vike/types";
 import { createCaller } from "../../../server/trpc/chat.js";
 import { getDbClient } from "../../../database/postgres.js";
-import { getOpenrouter } from "../../../server/provider.js";
+import { createOpenRouter } from "@openrouter/ai-sdk-provider";
 import { env } from "../../../server/env.js";
 
 export type Data = Awaited<ReturnType<typeof data>>;
@@ -9,9 +9,10 @@ export type Data = Awaited<ReturnType<typeof data>>;
 export const data = async (pageContext: PageContextServer) => {
   const { id } = pageContext.routeParams;
   const caller = createCaller({
-    openrouter: getOpenrouter(
-      (pageContext.env?.OPENROUTER_API_KEY || env.OPENROUTER_API_KEY) as string
-    ),
+    openrouter: createOpenRouter({
+      apiKey: (pageContext.env?.OPENROUTER_API_KEY ||
+        env.OPENROUTER_API_KEY) as string,
+    }),
     jwt: pageContext.session?.jwt,
     dbClient: getDbClient(
       (pageContext.env?.POSTGRES_CONNECTION_STRING ||