Sternboard: free retro board, no signup (initial)

Servidor Fastify + Socket.IO + Drizzle/Postgres; front Vite+React (EN/ES, tema claro/oscuro).
Tableros por columnas con plantillas, notas privadas/públicas, agrupación, votos
configurables (multivoto), timer compartido con alarma, fases, action items,
export Markdown/JSON e import, autodestrucción, gestión de columnas.
Imagen única (front servido por el servidor) y CI que la construye y publica.

server/test/import.test.ts

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+import { describe, it, expect, beforeAll, afterAll } from "vitest";
+import { startTestServer, type TestServer } from "./helpers.js";
+
+let server: TestServer;
+beforeAll(async () => {
+  server = await startTestServer();
+});
+afterAll(async () => {
+  await server.close();
+});
+
+const snapshot = {
+  version: 1,
+  board: { title: "Importado", votesPerUser: 4 },
+  columns: [
+    { id: "c1", title: "Columna A", position: 0 },
+    { id: "c2", title: "Columna B", position: 1 },
+  ],
+  groups: [],
+  notes: [
+    {
+      id: "n1",
+      columnId: "c1",
+      groupId: null,
+      authorId: "x",
+      authorName: "X",
+      text: "nota importada",
+      revealed: true,
+      position: 1,
+    },
+  ],
+  votes: [{ targetType: "note", targetId: "n1", participantId: "x" }],
+  actionItems: [{ text: "tarea importada", owner: "X" }],
+};
+
+async function importAndExport(mode: "full" | "structure") {
+  const res = await fetch(`${server.url}/api/boards/import`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({ snapshot, mode }),
+  });
+  const { boardId } = await res.json();
+  const md = await (await fetch(`${server.url}/api/boards/${boardId}/export`)).text();
+  return { boardId, md };
+}
+
+describe("Import", () => {
+  it("modo 'full' importa columnas, notas y votos", async () => {
+    const { md } = await importAndExport("full");
+    expect(md).toContain("# Importado");
+    expect(md).toContain("## Columna A");
+    expect(md).toContain("nota importada — _X_ (1 👍)");
+    expect(md).toContain("tarea importada");
+  });
+
+  it("modo 'structure' importa solo columnas y config, sin notas", async () => {
+    const { md } = await importAndExport("structure");
+    expect(md).toContain("## Columna A");
+    expect(md).toContain("## Columna B");
+    expect(md).not.toContain("nota importada");
+    expect(md).not.toContain("tarea importada");
+  });
+
+  it("rechaza un snapshot sin columnas", async () => {
+    const res = await fetch(`${server.url}/api/boards/import`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ snapshot: { version: 1, columns: [] }, mode: "full" }),
+    });
+    expect(res.status).toBe(400);
+  });
+});
+
+describe("Export con opciones", () => {
+  async function importFull(): Promise<string> {
+    const res = await fetch(`${server.url}/api/boards/import`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ snapshot, mode: "full" }),
+    });
+    return (await res.json()).boardId;
+  }
+  const md = (id: string, qs: string) =>
+    fetch(`${server.url}/api/boards/${id}/export${qs}`).then((r) => r.text());
+
+  it("autores y votos se pueden desactivar por query", async () => {
+    const id = await importFull();
+    expect(await md(id, "")).toContain("nota importada — _X_ (1 👍)"); // defaults
+    const noAuthors = await md(id, "?authors=0");
+    expect(noAuthors).toContain("nota importada (1 👍)");
+    expect(noAuthors).not.toContain("_X_");
+    const noVotes = await md(id, "?votes=0");
+    expect(noVotes).not.toContain("👍");
+  });
+
+  it("la fecha de creación se añade al título con created=1", async () => {
+    const id = await importFull();
+    const withDate = await md(id, "?created=1");
+    expect(withDate).toMatch(/^# \d+\/\d+\/\d+ - Importado/);
+  });
+});