Two files.
One register line.

mkdir dashlets/pdf-merger

import type { DashletManifest } from "../_schema";

export const manifest: DashletManifest = {
  slug: "pdf-merger",
  title: "PDF Merger",
  tagline: "Drop PDFs. Get one PDF.",
  description: "Combine PDFs in your browser. Nothing uploads.",
  category: "pdfs",
  keywords: ["pdf", "merge", "combine", "join"],
  status: "live",
  pricing: { kind: "free" },
  author: "tiredof",
  platforms: ["web"], // or ['web','ios'] / ['ios']
  promoted: false,
  auth_required: false,
  icon: "📚",
};

// Lazy-load the implementation. Static path, Turbopack resolves at build.
export const load = () => import("./Dashlet");

"use client";

import { useState } from "react";
import JSZip from "jszip";

export default function PdfMergerDashlet() {
  const[files, setFiles] = useState<File[]>([]);

  async function merge() {
    // your magic. Canvas, fetch, WASM, whatever.
  }

  return (
    <div className="space-y-5">
      /* your tool's UI */
    </div>
  );
}

import * as ScreenshotResizer from "./screenshot-resizer/manifest";
import * as InstagramCrop from "./instagram-crop/manifest";
import * as ReceiptOcr from "./receipt-ocr/manifest";
import * as PdfMerger from "./pdf-merger/manifest";  // add this

const RAW_MODULES = [
  ScreenshotResizer,
  InstagramCrop,
  ReceiptOcr,
  PdfMerger, // add this
];