Add digital catalog with shareable flipbook and ktg.montzar.ir deploy files.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/server/storage.test.ts

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+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { afterEach, describe, expect, it } from "vitest";
+import {
+  deleteCatalogFiles,
+  readPage,
+  saveCatalogPages,
+  StorageError,
+} from "../../server/storage";
+import { TINY_JPEG, TINY_PNG } from "./helpers";
+
+const temps: string[] = [];
+
+async function tempDir() {
+  const dir = await fs.mkdtemp(path.join(os.tmpdir(), "dc-storage-"));
+  temps.push(dir);
+  return dir;
+}
+
+afterEach(async () => {
+  await Promise.all(temps.splice(0).map((dir) => fs.rm(dir, { recursive: true, force: true })));
+});
+
+describe("saveCatalogPages", () => {
+  it("writes numbered jpegs and can read them back", async () => {
+    const dir = await tempDir();
+    await saveCatalogPages(dir, "abc", [TINY_JPEG, TINY_JPEG]);
+    const page1 = await readPage(dir, "abc", 1);
+    expect(page1.equals(TINY_JPEG)).toBe(true);
+    const page2 = await readPage(dir, "abc", 2);
+    expect(page2.equals(TINY_JPEG)).toBe(true);
+  });
+
+  it("rejects non-jpeg pages", async () => {
+    const dir = await tempDir();
+    await expect(saveCatalogPages(dir, "abc", [TINY_PNG])).rejects.toBeInstanceOf(
+      StorageError,
+    );
+  });
+
+  it("deletes files so later reads fail", async () => {
+    const dir = await tempDir();
+    await saveCatalogPages(dir, "abc", [TINY_JPEG]);
+    await deleteCatalogFiles(dir, "abc");
+    await expect(readPage(dir, "abc", 1)).rejects.toBeInstanceOf(StorageError);
+  });
+});