feat(experience): skills e experiencia visiveis (aberta em telas largas) e link Experiencia no menu

- ExperienceDisclosure abre a gaveta em >=1024px e quando o link aponta para #experience/#skills; no celular segue recolhida
- novo item Experiencia em NAVIGATION_ITEMS (desktop e menu mobile); testes do Header atualizados

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

app/components/Header.test.tsx

@@ -32,7 +32,13 @@ describe("Header", () => {
       within(navigation)
         .getAllByRole("link")
         .map((link) => link.getAttribute("href")),
-    ).toEqual(["/#modalities", "/cases", "/#process", "/#about"]);
+    ).toEqual([
+      "/#modalities",
+      "/cases",
+      "/#process",
+      "/#about",
+      "/#experience",
+    ]);
     const contactLink = screen
       .getAllByRole("link")
       .find((link) => link.getAttribute("href") === "/#contact");
@@ -68,7 +74,14 @@ describe("Header", () => {
       within(mobileNavigation)
         .getAllByRole("link")
         .map((link) => link.getAttribute("href")),
-    ).toEqual(["/#modalities", "/cases", "/#process", "/#about", "/#contact"]);
+    ).toEqual([
+      "/#modalities",
+      "/cases",
+      "/#process",
+      "/#about",
+      "/#experience",
+      "/#contact",
+    ]);
     expect(
       within(mobileNavigation).queryByRole("link", {
         name: /currículo|download cv/i,