feat(home): posicionamento com prova, menu sem recarregar e WhatsApp em todo o site

H1 'Sites e sistemas que trazem pedidos pelo WhatsApp e tiram sua operação da planilha.'; HeroWork maior com a SEV; menu Cases, Serviços, Como trabalho, Sobre e IA com next/link e pré-carregamento no hover; menu do celular em tela cheia; WhatsApp flutuante e no rodapé com a mensagem da rota; rodapé em todas as páginas; FAQ da home; /ia como oferta de revisão de app feito com IA; formulário com noscript, validação do mailto e plano B do pop-up; cartões sem foco indevido; sem a fonte Monument.

lib/whatsapp.test.ts

@@ -0,0 +1,104 @@
+import {
+  AI_REVIEW_SUBJECT,
+  buildWhatsAppUrl,
+  isServiceOrCasePath,
+  type WhatsAppContexts,
+  whatsAppSubjectForPath,
+} from "./whatsapp";
+
+const contexts: WhatsAppContexts = {
+  services: { "criacao-de-sites": "Sites profissionais" },
+  cases: { "sev-modaintima": "SEV Moda Íntima" },
+};
+
+describe("whatsAppSubjectForPath", () => {
+  it("cites the service on /servicos/<slug>", () => {
+    expect(whatsAppSubjectForPath("/servicos/criacao-de-sites", contexts)).toBe(
+      "Sites profissionais",
+    );
+  });
+
+  it("cites the case on /cases/<slug>", () => {
+    expect(whatsAppSubjectForPath("/cases/sev-modaintima", contexts)).toBe(
+      "um projeto parecido com o da SEV Moda Íntima",
+    );
+  });
+
+  it("cites the AI review on /ia", () => {
+    expect(whatsAppSubjectForPath("/ia", contexts)).toBe(AI_REVIEW_SUBJECT);
+    expect(whatsAppSubjectForPath("/ia/", undefined)).toBe(AI_REVIEW_SUBJECT);
+  });
+
+  it("ignores a trailing slash", () => {
+    expect(
+      whatsAppSubjectForPath("/servicos/criacao-de-sites/", contexts),
+    ).toBe("Sites profissionais");
+  });
+
+  it.each([
+    "/",
+    "/servicos",
+    "/cases",
+    "/curriculo",
+    "/privacidade",
+    "/servicos/inexistente",
+    "/cases/inexistente",
+    "/servicos/criacao-de-sites/extra",
+    // nomes que existem em todo objeto não podem virar assunto
+    "/servicos/constructor",
+    "/cases/__proto__",
+    "/cases/toString",
+  ])("falls back to a generic message on %s", (pathname) => {
+    expect(whatsAppSubjectForPath(pathname, contexts)).toBeUndefined();
+  });
+
+  it("treats an empty or blank name as missing, so the message never reads 'sobre .'", () => {
+    const blank: WhatsAppContexts = {
+      services: { vazio: "", espacos: "   " },
+      cases: { vazio: "", espacos: "  " },
+    };
+    for (const pathname of [
+      "/servicos/vazio",
+      "/servicos/espacos",
+      "/cases/vazio",
+      "/cases/espacos",
+    ]) {
+      expect(whatsAppSubjectForPath(pathname, blank)).toBeUndefined();
+    }
+  });
+
+  it("is generic without contexts, without a pathname or outside the router", () => {
+    expect(
+      whatsAppSubjectForPath("/servicos/criacao-de-sites"),
+    ).toBeUndefined();
+    expect(whatsAppSubjectForPath(null, contexts)).toBeUndefined();
+    expect(whatsAppSubjectForPath(undefined, contexts)).toBeUndefined();
+  });
+});
+
+describe("isServiceOrCasePath", () => {
+  it.each([
+    ["/servicos/criacao-de-sites", true],
+    ["/servicos/qualquer-coisa/", true],
+    ["/cases/sev-modaintima", true],
+    ["/", false],
+    ["/servicos", false],
+    ["/cases", false],
+    ["/ia", false],
+    ["/servicos/a/b", false],
+    [null, false],
+    [undefined, false],
+  ])("%s -> %s", (pathname, expected) => {
+    expect(isServiceOrCasePath(pathname)).toBe(expected);
+  });
+});
+
+describe("buildWhatsAppUrl", () => {
+  it("encodes the message in the text parameter of a wa.me link", () => {
+    const url = new URL(buildWhatsAppUrl("Olá & tudo? #1"));
+
+    expect(url.origin).toBe("https://wa.me");
+    expect(url.pathname).toMatch(/^\/\d{12,13}$/);
+    expect(url.searchParams.get("text")).toBe("Olá & tudo? #1");
+  });
+});