feat: add direct PostgreSQL and ACK deployment support

app/api/ready/route.ts

@@ -0,0 +1,31 @@
+import { NextResponse } from "next/server";
+import { checkDatabaseReadiness, getDatabaseStatus } from "@/lib/server/database";
+
+export const runtime = "nodejs";
+
+const READINESS_TIMEOUT_MS = 3_000;
+
+export async function GET() {
+  let database: { backend: "local" | "postgres" | "invalid"; configured: boolean };
+  try {
+    database = getDatabaseStatus();
+  } catch {
+    database = { backend: "invalid", configured: false };
+    return NextResponse.json({ ok: false, database }, { status: 503 });
+  }
+
+  let timeout: ReturnType<typeof setTimeout> | undefined;
+  try {
+    await Promise.race([
+      checkDatabaseReadiness(),
+      new Promise<never>((_, reject) => {
+        timeout = setTimeout(() => reject(new Error("Database readiness timed out")), READINESS_TIMEOUT_MS);
+      })
+    ]);
+    return NextResponse.json({ ok: true, database });
+  } catch {
+    return NextResponse.json({ ok: false, database }, { status: 503 });
+  } finally {
+    if (timeout) clearTimeout(timeout);
+  }
+}