Add API key generator and Zotero script builder

src/lib/clean-pdf/__tests__/api-key.test.ts

@@ -0,0 +1,15 @@
+import { describe, expect, it } from "vitest";
+import { PDF_KEY_PREFIX, generatePdfKey } from "@/lib/clean-pdf/api-key";
+
+describe("generatePdfKey", () => {
+  it("формат sbpdf_<base64url>, достаточная длина", () => {
+    const key = generatePdfKey();
+    expect(key.startsWith(PDF_KEY_PREFIX)).toBe(true);
+    expect(key.length).toBeGreaterThanOrEqual(PDF_KEY_PREFIX.length + 32);
+    expect(key.slice(PDF_KEY_PREFIX.length)).toMatch(/^[A-Za-z0-9_-]+$/);
+  });
+
+  it("две генерации различаются", () => {
+    expect(generatePdfKey()).not.toBe(generatePdfKey());
+  });
+});

src/lib/clean-pdf/__tests__/zotero-script.test.ts

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+import { describe, expect, it } from "vitest";
+import { buildZoteroScript } from "@/lib/clean-pdf/zotero-script";
+
+describe("buildZoteroScript", () => {
+  it("подставляет ключ и адрес школы", () => {
+    const s = buildZoteroScript({ apiKey: "sbpdf_test123", baseUrl: "https://school.second-brain.ru" });
+    expect(s).toContain("'sbpdf_test123'");
+    expect(s).toContain("'https://school.second-brain.ru'");
+    expect(s).toContain("/api/pdf?url=");
+    expect(s).not.toContain("YOUR_KEY");
+  });
+});