feat(home): prova no topo, contato sem atrito e conversão medida

Home mais curta (hero, vitrine de clientes, sobre, serviços, IA resumida, depoimentos e contato), faixa de clientes e telas reais no hero, sem números do GitHub. Barra de cookies fina, WhatsApp fixo no celular, formulário com e-mail opcional e alternativa por e-mail, página /ia, eventos de e-mail, redes e currículo e conversão do Ads opcional por variável. Rodapé em 3 colunas. Remove componentes órfãos (LighthouseMetrics, Skills, Experience, contagem do GitHub).

lib/analytics.ts

@@ -1,4 +1,5 @@
 export const GA_MEASUREMENT_ID = "G-QTT9QT0T3S";
+export const GOOGLE_ADS_ID = "AW-18432694647";
 export const CONSENT_STORAGE_KEY = "evandro.analytics-consent.v1";
 export const GA_DISABLE_KEY = "ga-disable-G-QTT9QT0T3S";
 
@@ -30,6 +31,7 @@ function analyticsPagePath(): string {
     case "/cases":
     case "/curriculo":
     case "/privacidade":
+    case "/ia":
       return path;
     default:
       // Route templates keep arbitrary slugs and personal data out of metrics.
@@ -39,16 +41,14 @@ function analyticsPagePath(): string {
   }
 }
 
-/** Measures an attempted handoff, not an opened app, delivered message or lead.
+type EventParams = Record<string, string>;
+
+/**
+ * Sends one GA4 event only while the visitor has granted consent; every other state is silent.
  * Callers must supply static labels, never form values or destination URLs.
+ * Returns true when the event was handed to gtag, so the Ads conversion is only sent for a counted click.
  */
-export function trackWhatsAppOpen({
-  service,
-  placement,
-}: {
-  service: string;
-  placement: string;
-}): void {
+function sendEvent(name: string, params: EventParams): boolean {
   if (
     process.env.NODE_ENV !== "production" ||
     typeof window === "undefined" ||
@@ -56,21 +56,72 @@ export function trackWhatsAppOpen({
     window[GA_DISABLE_KEY] === true ||
     typeof window.gtag !== "function"
   ) {
-    return;
+    return false;
   }
 
   try {
     const pagePath = analyticsPagePath();
-    window.gtag("event", "whatsapp_open", {
+    window.gtag("event", name, {
       send_to: GA_MEASUREMENT_ID,
-      service,
-      placement,
+      ...params,
       page_path: pagePath,
       // Override gtag's URL defaults so query/hash/referrer data cannot leak.
       page_location: `https://evandro.dev.br${pagePath}`,
       page_referrer: "",
     });
+    return true;
   } catch {
     // Analytics must never interrupt navigation. Dropped events are not replayed.
+    return false;
   }
 }
+
+/**
+ * Google Ads conversion for the same click, only when a conversion label is configured.
+ * Without NEXT_PUBLIC_GOOGLE_ADS_CONVERSION_LABEL nothing is sent to Ads.
+ */
+function sendAdsConversion(): void {
+  const label = process.env.NEXT_PUBLIC_GOOGLE_ADS_CONVERSION_LABEL;
+  if (!label) return;
+  try {
+    window.gtag?.("event", "conversion", {
+      send_to: `${GOOGLE_ADS_ID}/${label}`,
+    });
+  } catch {
+    // Same rule as above: a blocked tag never interrupts navigation.
+  }
+}
+
+/** Measures an attempted handoff, not an opened app, delivered message or lead. */
+export function trackWhatsAppOpen({
+  service,
+  placement,
+}: {
+  service: string;
+  placement: string;
+}): void {
+  if (sendEvent("whatsapp_open", { service, placement })) sendAdsConversion();
+}
+
+/** Measures a click on a mailto: link, not a sent e-mail. */
+export function trackEmailClick({ placement }: { placement: string }): void {
+  if (sendEvent("email_click", { placement })) sendAdsConversion();
+}
+
+/** Measures a click on a social profile; `network` is a static name such as "linkedin". */
+export function trackSocialClick({ network }: { network: string }): void {
+  sendEvent("social_click", { network });
+}
+
+/** Measures a click on the résumé PDF download. */
+export function trackCvDownload({ placement }: { placement: string }): void {
+  sendEvent("cv_download", { placement });
+}
+
+/** O rodapé pede a reabertura da barra de cookies; quem a monta (GoogleAnalytics) escuta este evento. */
+export const OPEN_COOKIE_PREFERENCES_EVENT = "evandro:open-cookie-preferences";
+
+export function openCookiePreferences(): void {
+  if (typeof window === "undefined") return;
+  window.dispatchEvent(new Event(OPEN_COOKIE_PREFERENCES_EVENT));
+}