fix: update auth request headers reference in chatRoom actor (#1147)

Author: NathanFlurry

examples/better-auth-external-db/src/backend/registry.ts

@@ -17,9 +17,9 @@ interface Message {
 export const chatRoom = actor({
 	// onAuth runs on the server & before connecting to the actor
 	onAuth: async (c: OnAuthOptions) => {
-		// ✨ NEW ✨ Access Better Auth session
+		// Access Better Auth session
 		const authResult = await auth.api.getSession({
-			headers: c.req.headers,
+			headers: c.request.headers,
 		});
 		if (!authResult) throw new Unauthorized();
 
@@ -34,7 +34,7 @@ export const chatRoom = actor({
 	} as State,
 	actions: {
 		sendMessage: (c, message: string) => {
-			// ✨ NEW ✨ — Access Better Auth with c.conn.auth
+			// Access Better Auth with c.conn.auth
 			const newMessage = {
 				id: crypto.randomUUID(),
 				userId: c.conn.auth.user.id,