fix(server-build): entferne Pfadalias '@/server/*' im Server-Code, nutze relative Imports; passe RPC-Route-Import und OpenAI-Import an; Server-Build nutzt CommonJS/Node Resolution

src/server/rpc/demo/ai.ts

@@ -2,7 +2,7 @@ import OpenAI from "openai";
 import { os } from "@orpc/server";
 import { z } from "zod";
 
-import { zodResponseFormat } from "@/server/lib/openai";
+import { zodResponseFormat } from "../../lib/openai";
 
 if (!process.env.OPENAI_BASE_URL) {
   throw new Error("OPENAI_BASE_URL is not set");