How to set cookies when signing in from server?

signIn: publicProcedure.input(signInSchema).mutation(async ({ input, ctx }) => {
        try {
            const res = await auth().api.signInEmail({
                body: {
                    email: input.email,
                    password: input.password,
                    callbackURL: `${ctx.env.VITE_PUBLIC_APP_URL}/dash`,
                },
                headers: ctx.honoContext.req.raw.headers,
                returnHeaders: true,
            });

            console.log("sign-in res:", res);

            return { status: "success", message: "Sign-in successful" };
        } catch (error) {
            return {
                status: "error",
                message: error instanceof Error ? error.message : "Sign-in failed",
            };
        }
    }),