fix(server-build): füge .js-Erweiterungen zu allen relativen Imports hinzu für ESNext-Module-Kompatibilität

src/server/index.ts

@@ -1,7 +1,7 @@
 import { Hono } from "hono";
 
-import { rpcApp } from "./routes/rpc";
-import { clientEntry } from "./routes/client-entry";
+import { rpcApp } from "./routes/rpc.js";
+import { clientEntry } from "./routes/client-entry.js";
 
 const app = new Hono();
 
@@ -19,7 +19,7 @@ app.get("/health", (c) => {
 // Legal config endpoint (temporary fix for RPC issue)
 app.get("/api/legal-config", async (c) => {
   try {
-    const { getLegalConfig } = await import("./lib/legal-config");
+    const { getLegalConfig } = await import("./lib/legal-config.js");
     const config = getLegalConfig();
     return c.json(config);
   } catch (error) {