feat(cases): cases de clientes, serviços ligados à prova e SEO por página

Cases da SEV Moda Íntima e da Lavação 047; case no formato cliente, problema, entrega, mídia e contato, com detalhes técnicos recolhidos; sem GitHub, ressalvas e fontes de commit. /cases separa clientes e Laboratório. Serviços mostram o case de cliente certo e o bloco de investimento e prazo só aparece preenchido. Metadata social própria por página, not-found com noindex, sitemap com /ia.

app/cases/_components/case-media.paths.test.ts

@@ -0,0 +1,41 @@
+import { existsSync } from "node:fs";
+import { getCaseMedia } from "./case-media";
+
+/** Testes de caminhos-base de getCaseMedia: id inválido, pôster ausente e pôster presente em disco. */
+
+jest.mock("node:fs", () => {
+  const actual = jest.requireActual<typeof import("node:fs")>("node:fs");
+  return { ...actual, existsSync: jest.fn(actual.existsSync) };
+});
+
+const mockedExistsSync = jest.mocked(existsSync);
+
+beforeEach(() => {
+  mockedExistsSync.mockClear();
+});
+
+describe("getCaseMedia", () => {
+  it.each([
+    ["with path traversal", "../../etc/passwd"],
+    ["with upper case", "Sev-Modaintima"],
+    ["with a slash", "sev/modaintima"],
+    ["empty", ""],
+  ])("path: id %s -> undefined without touching the disk", (_label, id) => {
+    expect(getCaseMedia(id, "desktop")).toBeUndefined();
+    expect(mockedExistsSync).not.toHaveBeenCalled();
+  });
+
+  it("path: valid id with no poster on disk -> undefined", () => {
+    expect(getCaseMedia("twins-lab", "desktop")).toBeUndefined();
+    expect(mockedExistsSync).toHaveBeenCalledTimes(1);
+  });
+
+  it("path: valid id with the poster on disk -> the showcase assets of that device", () => {
+    const desktop = getCaseMedia("sev-modaintima", "desktop");
+    const mobile = getCaseMedia("sev-modaintima", "mobile");
+
+    expect(desktop?.poster).toBe("/videos/sev-modaintima/desktop.webp");
+    expect(mobile?.poster).toBe("/videos/sev-modaintima/mobile.webp");
+    expect(desktop?.sources.length).toBeGreaterThan(0);
+  });
+});