feat: revamp portfolio with case studies, curriculo page, and local SEO

Adds dynamic case study and curriculo routes, project health monitoring
for live demo status, and strengthens local SEO (structured data,
service-area targeting for Garuva/Joinville/Curitiba, a dedicated
"criação de sites" service page) so search results better match the
professional title (Engenheiro da Computação) and experience (5 anos).

Co-Authored-By: Claude Sonnet 5 <[email protected]>

lib/project-health.test.ts

@@ -0,0 +1,87 @@
+import {
+  createProjectHealthSnapshot,
+  filterLiveProjects,
+  isCurrentLiveCheck,
+  type ProjectHealthSnapshot,
+} from "./project-health";
+
+describe("project health snapshot", () => {
+  const now = new Date("2026-07-10T12:00:00.000Z");
+  const snapshot: ProjectHealthSnapshot = {
+    checkedAt: "2026-07-10T11:55:00.000Z",
+    projects: {
+      online: {
+        status: 200,
+        contentType: "text/html; charset=utf-8",
+        checkedAt: "2026-07-10T11:55:00.000Z",
+      },
+      redirect: {
+        status: 301,
+        contentType: "text/html",
+        checkedAt: "2026-07-10T11:55:00.000Z",
+      },
+      stale: {
+        status: 200,
+        contentType: "text/html",
+        checkedAt: "2026-07-10T10:30:00.000Z",
+      },
+    },
+  };
+
+  it("accepts only fresh final HTTP 200 HTML projects", () => {
+    expect(isCurrentLiveCheck(snapshot.projects.online, now)).toBe(true);
+    expect(isCurrentLiveCheck(snapshot.projects.redirect, now)).toBe(false);
+    expect(isCurrentLiveCheck(snapshot.projects.stale, now)).toBe(false);
+
+    expect(
+      filterLiveProjects(
+        [
+          { id: "online", featured: true },
+          { id: "redirect", featured: true },
+          { id: "stale", featured: true },
+          { id: "hidden", featured: false },
+        ],
+        snapshot,
+        now,
+      ).map((project) => project.id),
+    ).toEqual(["online"]);
+  });
+
+  it("fails closed when the snapshot is absent or expired", () => {
+    expect(
+      filterLiveProjects([{ id: "online", featured: true }], null, now),
+    ).toEqual([]);
+    expect(
+      filterLiveProjects(
+        [{ id: "online", featured: true }],
+        { ...snapshot, checkedAt: "2026-07-10T10:00:00.000Z" },
+        now,
+      ),
+    ).toEqual([]);
+  });
+
+  it("creates a fresh health snapshot when the stored result is unavailable", async () => {
+    const fetcher = jest.fn(async (url: string) => ({
+      status: url.includes("online") ? 200 : 503,
+      url,
+      headers: new Headers({
+        "content-type": url.includes("online") ? "text/html" : "text/plain",
+      }),
+      body: { cancel: jest.fn() },
+    }));
+
+    const result = await createProjectHealthSnapshot(
+      [
+        { id: "online", demoUrl: "https://online.example" },
+        { id: "offline", demoUrl: "https://offline.example" },
+      ],
+      fetcher,
+      new Date("2026-07-10T12:00:00.000Z"),
+    );
+
+    expect(result.projects.online.status).toBe(200);
+    expect(result.projects.online.contentType).toBe("text/html");
+    expect(result.projects.offline.status).toBe(503);
+    expect(fetcher).toHaveBeenCalledTimes(2);
+  });
+});