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/private.test.ts

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+import { describe, it, expect, beforeAll, afterAll } from "vitest";
+import { startTestServer, createBoard, join, type TestServer } from "./helpers.js";
+
+let server: TestServer;
+beforeAll(async () => {
+  server = await startTestServer();
+});
+afterAll(async () => {
+  await server.close();
+});
+
+describe("Notas privadas y publicar", () => {
+  it("note:publishMine publica todas mis notas de la columna", async () => {
+    const board = await createBoard(server.url);
+    const alice = await join(server.url, board.boardId, "alice", "Alice");
+    const bob = await join(server.url, board.boardId, "bob", "Bob");
+    const colId = alice.last!.columns[0].id;
+
+    alice.emit("note:add", { columnId: colId, text: "uno" });
+    alice.emit("note:add", { columnId: colId, text: "dos" });
+    await alice.waitFor((s) => s.notes.length === 2);
+
+    // Bob recibe las notas pero sin texto (privadas)
+    const bobBefore = await bob.waitFor((s) => s.notes.length === 2);
+    expect(bobBefore.notes.every((n) => n.text === "")).toBe(true);
+
+    alice.emit("note:publishMine", { columnId: colId });
+
+    // guard de longitud: every() es vacuamente true sobre [] -> exigimos las 2 notas
+    const bobAfter = await bob.waitFor((s) => s.notes.length === 2 && s.notes.every((n) => n.text !== ""));
+    expect(bobAfter.notes.map((n) => n.text).sort()).toEqual(["dos", "uno"]);
+
+    alice.close();
+    bob.close();
+  });
+
+  it("agrupar publica las notas implicadas", async () => {
+    const board = await createBoard(server.url);
+    const alice = await join(server.url, board.boardId, "alice", "Alice");
+    const bob = await join(server.url, board.boardId, "bob", "Bob");
+    const colId = alice.last!.columns[0].id;
+
+    alice.emit("note:add", { columnId: colId, text: "A" });
+    alice.emit("note:add", { columnId: colId, text: "B" });
+    const st = await alice.waitFor((s) => s.notes.length === 2);
+    const [a, b] = st.notes;
+
+    alice.emit("group:create", { noteId: b.id, targetNoteId: a.id });
+
+    // Bob ve ambas notas con texto (agrupar es público)
+    const bobAfter = await bob.waitFor(
+      (s) => s.groups.length === 1 && s.notes.length === 2 && s.notes.every((n) => n.text !== ""),
+    );
+    expect(bobAfter.notes.map((n) => n.text).sort()).toEqual(["A", "B"]);
+
+    alice.close();
+    bob.close();
+  });
+});