Corrige l'overlay de chargement bloqué en navigation, l'ajoute au CV

- L'intro se rendait puis se retirait selon le pathname, laissant un
  overlay opaque figé au retour vers l'accueil depuis /cv
- Overlay conservé sur / et /cv : le nœud DOM persiste, le display:none
  posé par GSAP tient
- L'animation d'intro (F + barre + balayage) se joue aussi sur /cv

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3hzMzvei419MwkKFZkvMX

app/intro.tsx

@@ -4,6 +4,9 @@ import { useEffect } from "react";
 import { usePathname } from "next/navigation";
 import gsap from "gsap";
 
+// Pages qui ont l'écran de chargement (avec/sans slash final selon la config).
+const WITH_INTRO = new Set(["/", "/cv", "/cv/"]);
+
 export default function Intro() {
   const pathname = usePathname();
 
@@ -12,17 +15,18 @@ export default function Intro() {
     const reveal = gsap.utils.toArray<HTMLElement>("[data-reveal]");
     const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
 
-    // No reveal targets (e.g. error / not-found pages) or reduced motion: skip the intro.
+    if (reduce) {
-    if (reduce || reveal.length === 0) {
       gsap.set(overlay, { display: "none" });
       return;
     }
 
-    gsap.set(reveal, { autoAlpha: 0, y: 12 });
+    if (reveal.length) gsap.set(reveal, { autoAlpha: 0, y: 12 });
 
     const tl = gsap.timeline({
       defaults: { ease: "power3.out" },
-      onComplete: () => gsap.set(reveal, { clearProps: "all" }),
+      onComplete: () => {
+        if (reveal.length) gsap.set(reveal, { clearProps: "all" });
+      },
     });
 
     tl.to("[data-intro-mark]", { autoAlpha: 1, scale: 1, duration: 0.45, ease: "power2.out" }, 0)
@@ -32,17 +36,16 @@ export default function Intro() {
         { scaleX: 1, duration: 0.85, ease: "power2.inOut" },
         0.1,
       )
-      .to(overlay, { yPercent: -100, duration: 0.5, ease: "power3.inOut" }, ">-0.1")
+      .to(overlay, { yPercent: -100, duration: 0.5, ease: "power3.inOut" }, ">-0.1");
-      .to(reveal, { autoAlpha: 1, y: 0, duration: 0.5, stagger: 0.07 }, "<0.2")
-      .set(overlay, { display: "none" });
 
-    return () => {
+    if (reveal.length) {
-      tl.kill();
+      tl.to(reveal, { autoAlpha: 1, y: 0, duration: 0.5, stagger: 0.07 }, "<0.2");
-      gsap.set(reveal, { clearProps: "all" });
+    }
-    };
+
+    tl.set(overlay, { display: "none" });
   }, []);
 
-  if (pathname !== "/") return null;
+  if (!WITH_INTRO.has(pathname)) return null;
 
   return (
     <div