build: package standalone self hosted runtime

scripts/prepare-standalone.mjs

@@ -0,0 +1,29 @@
+import { cp, mkdir, stat } from "node:fs/promises";
+import path from "node:path";
+
+const rootDir = process.cwd();
+const standaloneDir = path.join(rootDir, ".next", "standalone");
+
+async function requireDirectory(directory, label) {
+  const info = await stat(directory).catch(() => null);
+
+  if (!info?.isDirectory()) {
+    throw new Error(`${label} bulunamadı: ${directory}`);
+  }
+}
+
+await requireDirectory(standaloneDir, "Next.js standalone çıktısı");
+await requireDirectory(path.join(rootDir, ".next", "static"), "Next.js static çıktısı");
+await requireDirectory(path.join(rootDir, "public"), "Public dizini");
+
+await mkdir(path.join(standaloneDir, ".next"), { recursive: true });
+await cp(path.join(rootDir, ".next", "static"), path.join(standaloneDir, ".next", "static"), {
+  recursive: true,
+  force: true,
+});
+await cp(path.join(rootDir, "public"), path.join(standaloneDir, "public"), {
+  recursive: true,
+  force: true,
+});
+
+console.log("Standalone runtime assets prepared.");