feat: login IT con allowlist (scrypt+HMAC) + middleware protege tablero/gestion

src/app/api/auth/route.ts

@@ -0,0 +1,36 @@
+import { NextRequest, NextResponse } from "next/server";
+import { COOKIE, isAllowed, parseUsers, signSession, verifyPassword, SESSION_MAX_AGE } from "@/lib/auth";
+
+export async function POST(req: NextRequest) {
+  try {
+    const { email, password } = await req.json();
+    const mail = String(email || "").trim().toLowerCase();
+    if (!mail || !password) {
+      return NextResponse.json({ error: "Faltan credenciales" }, { status: 400 });
+    }
+    const users = parseUsers();
+    const hash = users.get(mail);
+    if (!hash || !isAllowed(mail) || !(await verifyPassword(String(password), hash))) {
+      // Mensaje genérico: no revela si el correo existe
+      await new Promise((r) => setTimeout(r, 600));
+      return NextResponse.json({ error: "Credenciales inválidas" }, { status: 401 });
+    }
+    const res = NextResponse.json({ ok: true, email: mail });
+    res.cookies.set(COOKIE, await signSession(mail), {
+      httpOnly: true,
+      secure: true,
+      sameSite: "lax",
+      path: "/",
+      maxAge: SESSION_MAX_AGE,
+    });
+    return res;
+  } catch {
+    return NextResponse.json({ error: "Error interno" }, { status: 500 });
+  }
+}
+
+export async function DELETE() {
+  const res = NextResponse.json({ ok: true });
+  res.cookies.set(COOKIE, "", { httpOnly: true, secure: true, sameSite: "lax", path: "/", maxAge: 0 });
+  return res;
+}