modules/server: use validated env in drizzle config

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: aster-void

apps/server/drizzle.config.ts

@@ -1,10 +1,11 @@
 import type { Config } from "drizzle-kit";
+import { env } from "./src/env.ts";
 
 export default {
   schema: "./src/db/schema.ts",
   out: "./drizzle",
   dialect: "postgresql",
   dbCredentials: {
-    url: process.env.DATABASE_URL || "",
+    url: env.DATABASE_URL,
   },
 } satisfies Config;