diff --git a/index.js b/index.js
index e6a0ad2..5defc5d 100644
--- a/index.js
+++ b/index.js
@@ -1,124 +1,200 @@
 'use strict';
 
+/**
+ * estados-hs-direct/index.js
+ * - Server HTTP (Express) para ejecutar cambios de estado HomeServe "directo" (sin cola).
+ * - Auth opcional vía Firebase ID Token (REQUIRE_AUTH=1).
+ * - Credenciales HomeServe leídas desde Firestore (HS_CRED_DOC_PATH=secrets/homeserve).
+ * - Healthcheck compatible con CapRover: / y /health devuelven 200.
+ *
+ * Firestore doc recomendado (por defecto: secrets/homeserve):
+ * {
+ *   baseUrl: "https://gestor.homeserve.es/",
+ *   user: "usuario@...",
+ *   pass: "******",
+ *   selectors: {
+ *     user: "...",
+ *     pass: "...",
+ *     submit: "...",
+ *     searchBox: "...",
+ *     searchBtn: "...",
+ *     openRow: "...",
+ *     statusDropdown: "...",
+ *     saveBtn: "...",
+ *     noteTextarea: "..."
+ *   }
+ * }
+ *
+ * Request POST /api/homeserve/change-status:
+ * {
+ *   "serviceNumber": "28197832",
+ *   "code": "348",
+ *   "dateString": "03/01/2026",
+ *   "observation": "texto opcional"
+ * }
+ */
+
 const express = require('express');
-const cors = require('cors');
-const admin = require('firebase-admin');
 const { chromium } = require('playwright');
+const admin = require('firebase-admin');
 
 const PORT = parseInt(process.env.PORT || '3000', 10);
+const REQUIRE_AUTH = String(process.env.REQUIRE_AUTH || '0') === '1';
+const HS_CRED_DOC_PATH = process.env.HS_CRED_DOC_PATH || 'secrets/homeserve';
 
-// ====== CONFIG ======
-const CONFIG = {
-  HOMESERVE_BASE_URL: process.env.HOMESERVE_BASE_URL || 'https://gestor.homeserve.es/',
+// Selectores por defecto (puedes sobreescribirlos vía env o Firestore doc)
+const DEFAULT_SEL = {
+  user: process.env.SEL_USER || 'input[type="text"]',
+  pass: process.env.SEL_PASS || 'input[type="password"]',
+  submit: process.env.SEL_SUBMIT || 'button[type="submit"]',
 
-  // Firestore doc path que guarda credenciales HS
-  // Ejemplo: secrets/homeserve  (collection/doc)
-  HS_CRED_DOC_PATH: process.env.HS_CRED_DOC_PATH || 'secrets/homeserve',
+  searchBox: process.env.SEL_SEARCH_BOX || 'input[placeholder*="Buscar"], input[type="search"]',
+  searchBtn: process.env.SEL_SEARCH_BTN || 'button:has-text("Buscar"), button:has-text("Search")',
+  openRow: process.env.SEL_OPEN_ROW || 'table tbody tr:first-child',
 
-  // Seguridad: si REQUIRE_AUTH=1, obliga a token Firebase (Authorization: Bearer <idToken>)
-  REQUIRE_AUTH: String(process.env.REQUIRE_AUTH || '1') === '1',
+  // Ojo: aquí NO seleccionamos por "texto", sino por código (value o texto que contenga el code)
+  statusDropdown:
+    process.env.SEL_STATUS_DROPDOWN ||
+    'select[name*="estado"], select[id*="estado"], select:has(option)',
 
-  // Playwright
-  HEADLESS: String(process.env.HEADLESS || 'true') !== 'false',
+  noteTextarea:
+    process.env.SEL_NOTE_TEXTAREA ||
+    'textarea[name*="nota"], textarea[id*="nota"], textarea',
 
-  // Selectores (ajustables por env si el portal cambia)
-  SEL: {
-    user: process.env.SEL_USER || 'input[type="text"], input[name="username"], input[id*="user"], input[autocomplete="username"]',
-    pass: process.env.SEL_PASS || 'input[type="password"], input[name="password"], input[id*="pass"], input[autocomplete="current-password"]',
-    submit: process.env.SEL_SUBMIT || 'button[type="submit"], button:has-text("Entrar"), button:has-text("Acceder"), button:has-text("Login")',
-
-    // búsqueda parte
-    searchBox: process.env.SEL_SEARCH_BOX || 'input[placeholder*="Buscar"], input[type="search"]',
-    searchBtn: process.env.SEL_SEARCH_BTN || 'button:has-text("Buscar"), button:has-text("Search")',
-
-    openRow: process.env.SEL_OPEN_ROW || 'table tbody tr:first-child',
-
-    // cambio estado
-    statusDropdown: process.env.SEL_STATUS_DROPDOWN || 'select[name*="estado"], select[id*="estado"], select',
-    // opcional: input/selector para fecha seguimiento
-    followUpDate: process.env.SEL_FOLLOWUP_DATE || 'input[name*="fecha"], input[id*="fecha"], input[type="date"]',
-    // opcional: textarea nota
-    noteTextarea: process.env.SEL_NOTE_TEXTAREA || 'textarea[name*="nota"], textarea[id*="nota"], textarea',
-    saveBtn: process.env.SEL_SAVE_BTN || 'button:has-text("Guardar"), button:has-text("Save"), button:has-text("Actualizar")',
-  },
-
-  // Timeout
-  TIMEOUT_MS: parseInt(process.env.TIMEOUT_MS || '120000', 10),
+  saveBtn:
+    process.env.SEL_SAVE_BTN ||
+    'button:has-text("Guardar"), button:has-text("Save"), button:has-text("Actualizar")',
 };
 
-const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+function log(...args) {
+  console.log('[estados-hs]', ...args);
+}
 
-let busy = false;
+function safeStr(v) {
+  return (v == null) ? '' : String(v);
+}
+
+function stripDigits(v) {
+  return safeStr(v).replace(/\D+/g, '');
+}
+
+// ---------------- Firebase init ----------------
+
+let firestore = null;
+
+function initFirebaseOnce() {
+  if (firestore) return firestore;
+
+  // Intentamos init de varias formas para que no te "explote" según el entorno
+  try {
+    if (admin.apps && admin.apps.length) {
+      firestore = admin.firestore();
+      return firestore;
+    }
+
+    // 1) Con service account por envs (como tenías antes)
+    if (process.env.FIREBASE_PRIVATE_KEY) {
+      if (!process.env.FIREBASE_PROJECT_ID || !process.env.FIREBASE_CLIENT_EMAIL) {
+        throw new Error('Missing env: FIREBASE_PROJECT_ID or FIREBASE_CLIENT_EMAIL');
+      }
 
-// ====== FIREBASE ADMIN INIT ======
-function initFirebaseAdmin() {
-  // Opción A: variables (como tus robots antiguos)
-  const hasEnvKey = !!process.env.FIREBASE_PRIVATE_KEY;
-  if (hasEnvKey) {
-    if (admin.apps.length === 0) {
       admin.initializeApp({
         credential: admin.credential.cert({
-          projectId: mustEnv('FIREBASE_PROJECT_ID'),
-          clientEmail: mustEnv('FIREBASE_CLIENT_EMAIL'),
-          privateKey: mustEnv('FIREBASE_PRIVATE_KEY').replace(/\\n/g, '\n'),
+          projectId: process.env.FIREBASE_PROJECT_ID,
+          clientEmail: process.env.FIREBASE_CLIENT_EMAIL,
+          privateKey: process.env.FIREBASE_PRIVATE_KEY.replace(/\\n/g, '\n'),
         }),
       });
-    }
-    return;
-  }
 
-  // Opción B: Application Default Credentials (GOOGLE_APPLICATION_CREDENTIALS)
-  // En CapRover puedes montar un archivo JSON y exportar GOOGLE_APPLICATION_CREDENTIALS
-  if (admin.apps.length === 0) {
+      firestore = admin.firestore();
+      return firestore;
+    }
+
+    // 2) Application Default Credentials (por ejemplo con GOOGLE_APPLICATION_CREDENTIALS)
     admin.initializeApp({
       credential: admin.credential.applicationDefault(),
     });
-  }
-}
 
-function mustEnv(name) {
-  const v = process.env[name];
-  if (!v) throw new Error(`Missing env: ${name}`);
-  return v;
-}
+    firestore = admin.firestore();
+    return firestore;
 
-async function getHomeServeCreds(db) {
-  // Espera que el doc tenga campos tipo:
-  // { user: "...", pass: "..." }  o  { username: "...", password: "..." }
-  const snap = await db.doc(CONFIG.HS_CRED_DOC_PATH).get();
-  if (!snap.exists) {
-    throw new Error(`HS credentials doc not found: ${CONFIG.HS_CRED_DOC_PATH}`);
-  }
-  const d = snap.data() || {};
-  const user = (d.user || d.username || d.email || d.HOMESERVE_USER || '').toString().trim();
-  const pass = (d.pass || d.password || d.HOMESERVE_PASS || '').toString().trim();
-  if (!user || !pass) {
-    throw new Error(`HS credentials doc missing fields (need user/pass): ${CONFIG.HS_CRED_DOC_PATH}`);
-  }
-  return { user, pass };
-}
-
-async function verifyAuth(req) {
-  if (!CONFIG.REQUIRE_AUTH) return { ok: true, uid: null };
-
-  const h = req.headers.authorization || '';
-  const m = h.match(/^Bearer\s+(.+)$/i);
-  if (!m) {
-    return { ok: false, status: 401, error: 'Missing Authorization Bearer token' };
-  }
-
-  try {
-    const decoded = await admin.auth().verifyIdToken(m[1]);
-    return { ok: true, uid: decoded.uid };
   } catch (e) {
-    return { ok: false, status: 401, error: 'Invalid token' };
+    // Lo dejamos súper claro en logs
+    log('Firebase init error:', e?.message || e);
+    throw e;
   }
 }
 
-// ====== PLAYWRIGHT FLOW ======
+async function verifyFirebaseIdToken(req) {
+  const authHeader = req.headers.authorization || '';
+  const m = authHeader.match(/^Bearer\s+(.+)$/i);
+  if (!m) throw new Error('Missing Authorization Bearer token');
+
+  const idToken = m[1];
+  const db = initFirebaseOnce(); // asegura admin init
+  void db; // (solo para dejar claro que lo usamos para init)
+  const decoded = await admin.auth().verifyIdToken(idToken);
+  return decoded;
+}
+
+// ---------------- HomeServe creds cache ----------------
+
+let cachedCreds = null;
+let cachedCredsAt = 0;
+const CREDS_TTL_MS = 60 * 1000; // 1 min (para que si cambias algo en Firestore lo pille rápido)
+
+async function loadHomeServeCreds() {
+  const now = Date.now();
+  if (cachedCreds && (now - cachedCredsAt) < CREDS_TTL_MS) return cachedCreds;
+
+  const db = initFirebaseOnce();
+
+  // Env override (si quieres, pero por defecto: Firestore)
+  const envUser = process.env.HOMESERVE_USER;
+  const envPass = process.env.HOMESERVE_PASS;
+  const envBaseUrl = process.env.HOMESERVE_BASE_URL;
+
+  let fromFirestore = null;
+  try {
+    const ref = db.doc(HS_CRED_DOC_PATH);
+    const snap = await ref.get();
+    if (snap.exists) fromFirestore = snap.data() || {};
+  } catch (e) {
+    log('Warning: cannot read HS creds from Firestore:', e?.message || e);
+  }
+
+  const baseUrl =
+    safeStr(envBaseUrl || fromFirestore?.baseUrl || 'https://gestor.homeserve.es/').trim();
+
+  const user =
+    safeStr(envUser || fromFirestore?.user || fromFirestore?.username || '').trim();
+
+  const pass =
+    safeStr(envPass || fromFirestore?.pass || fromFirestore?.password || '').trim();
+
+  const selectors = {
+    ...DEFAULT_SEL,
+    ...(fromFirestore?.selectors || {}),
+  };
+
+  if (!user || !pass) {
+    throw new Error(
+      `HomeServe credentials missing. Set them in Firestore doc "${HS_CRED_DOC_PATH}" (fields: user, pass) or env HOMESERVE_USER/HOMESERVE_PASS.`
+    );
+  }
+
+  cachedCreds = { baseUrl, user, pass, selectors };
+  cachedCredsAt = now;
+  return cachedCreds;
+}
+
+// ---------------- Playwright helpers ----------------
+
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+
 async function withBrowser(fn) {
   const browser = await chromium.launch({
-    headless: CONFIG.HEADLESS,
+    headless: true,
     args: ['--no-sandbox', '--disable-setuid-sandbox'],
   });
 
@@ -132,202 +208,206 @@ async function withBrowser(fn) {
   }
 }
 
-async function login(page, hsUser, hsPass) {
-  await page.goto(CONFIG.HOMESERVE_BASE_URL, { waitUntil: 'domcontentloaded', timeout: CONFIG.TIMEOUT_MS });
+async function loginHomeServe(page, creds) {
+  const { baseUrl, user, pass, selectors: SEL } = creds;
 
-  await page.waitForSelector(CONFIG.SEL.user, { timeout: 60000 });
-  await page.fill(CONFIG.SEL.user, hsUser);
+  await page.goto(baseUrl, { waitUntil: 'domcontentloaded', timeout: 120000 });
 
-  await page.waitForSelector(CONFIG.SEL.pass, { timeout: 60000 });
-  await page.fill(CONFIG.SEL.pass, hsPass);
+  await page.waitForSelector(SEL.user, { timeout: 60000 });
+  await page.fill(SEL.user, user);
 
-  const btn = await page.$(CONFIG.SEL.submit);
+  await page.waitForSelector(SEL.pass, { timeout: 60000 });
+  await page.fill(SEL.pass, pass);
+
+  const btn = await page.$(SEL.submit);
   if (btn) await btn.click();
   else await page.keyboard.press('Enter');
 
-  // Importante: a veces HS no llega a networkidle (polling interno). Mejor esperar a DOM + un respiro.
-  await page.waitForLoadState('domcontentloaded', { timeout: CONFIG.TIMEOUT_MS });
-  await sleep(1200);
+  await page.waitForLoadState('networkidle', { timeout: 120000 });
 }
 
-async function openParte(page, parteId) {
-  const hasSearch = await page.$(CONFIG.SEL.searchBox);
+async function openParte(page, parteId, SEL) {
+  const hasSearch = await page.$(SEL.searchBox);
   if (hasSearch) {
-    await page.fill(CONFIG.SEL.searchBox, String(parteId));
-    const btn = await page.$(CONFIG.SEL.searchBtn);
+    await page.fill(SEL.searchBox, String(parteId));
+    const btn = await page.$(SEL.searchBtn);
     if (btn) await btn.click();
     else await page.keyboard.press('Enter');
 
-    await page.waitForLoadState('domcontentloaded', { timeout: CONFIG.TIMEOUT_MS });
+    await page.waitForLoadState('networkidle', { timeout: 120000 });
     await sleep(1200);
   }
 
-  await page.waitForSelector(CONFIG.SEL.openRow, { timeout: 60000 });
-  await page.click(CONFIG.SEL.openRow);
+  await page.waitForSelector(SEL.openRow, { timeout: 60000 });
+  await page.click(SEL.openRow);
 
-  await page.waitForLoadState('domcontentloaded', { timeout: CONFIG.TIMEOUT_MS });
+  await page.waitForLoadState('networkidle', { timeout: 120000 });
   await sleep(1200);
 }
 
-function normalizeDateDDMMYYYY(s) {
-  const v = String(s || '').trim();
-  if (!v) return '';
-  // acepta dd/MM/yyyy o yyyy-MM-dd
-  if (/^\d{2}\/\d{2}\/\d{4}$/.test(v)) return v;
-  if (/^\d{4}-\d{2}-\d{2}$/.test(v)) {
-    const [y, m, d] = v.split('-');
-    return `${d}/${m}/${y}`;
-  }
-  return v; // lo dejamos tal cual si el usuario mete algo raro
-}
+/**
+ * Selecciona estado por "code".
+ * - 1) intenta selectOption por value==code
+ * - 2) intenta encontrar option cuyo texto contenga el code
+ * - 3) dispara change
+ */
+async function selectStatusByCode(page, SEL, code) {
+  const statusCode = safeStr(code).trim();
+  if (!statusCode) throw new Error('Missing status code');
 
-async function setEstadoByCode(page, statusCode, followUpDate, note) {
-  const code = String(statusCode || '').trim();
-  if (!code) throw new Error('Missing statusCode');
+  await page.waitForSelector(SEL.statusDropdown, { timeout: 60000 });
 
-  await page.waitForSelector(CONFIG.SEL.statusDropdown, { timeout: 60000 });
-
-  // 1) intenta por value exacto (lo normal si el portal usa códigos)
-  let selected = false;
+  // intento 1: value = code
   try {
-    await page.selectOption(CONFIG.SEL.statusDropdown, { value: code });
-    selected = true;
-  } catch (_) {}
-
-  // 2) si no, intenta por label que contenga el código
-  if (!selected) {
-    const ok = await page.evaluate(({ sel, code }) => {
-      const s = document.querySelector(sel);
-      if (!s) return false;
-      const opts = Array.from(s.querySelectorAll('option'));
-      const hit = opts.find(o => {
-        const t = (o.textContent || '').trim();
-        // acepta "Texto (348)" o "348 - Texto" o similares
-        return t.includes(code) || t.startsWith(code);
-      });
-      if (!hit) return false;
-      s.value = hit.value;
-      s.dispatchEvent(new Event('change', { bubbles: true }));
-      return true;
-    }, { sel: CONFIG.SEL.statusDropdown, code });
-
-    if (!ok) throw new Error(`No matching status option for code "${code}"`);
+    await page.selectOption(SEL.statusDropdown, { value: statusCode });
+    return;
+  } catch (_) {
+    // sigue
   }
 
-  // Fecha seguimiento (opcional)
-  const dateStr = normalizeDateDDMMYYYY(followUpDate);
-  if (dateStr) {
-    const hasDate = await page.$(CONFIG.SEL.followUpDate);
-    if (hasDate) {
-      // si es input type="date" espera yyyy-MM-dd, pero muchos portales usan texto.
-      // Intentamos poner tal cual; si falla, no rompemos.
-      try {
-        await page.fill(CONFIG.SEL.followUpDate, dateStr);
-      } catch (_) {}
-    }
-  }
+  // intento 2: buscar option por texto que contenga el code
+  const ok = await page.evaluate(({ sel, code }) => {
+    const s = document.querySelector(sel);
+    if (!s) return { ok: false, why: 'select not found' };
 
-  // Nota (opcional)
-  if (note) {
-    const ta = await page.$(CONFIG.SEL.noteTextarea);
+    const opts = Array.from(s.querySelectorAll('option'));
+    const hit =
+      opts.find(o => (o.value || '').trim() === code) ||
+      opts.find(o => ((o.textContent || '').replace(/\s+/g, ' ')).includes(code));
+
+    if (!hit) return { ok: false, why: 'no matching option' };
+
+    s.value = hit.value;
+    s.dispatchEvent(new Event('change', { bubbles: true }));
+    return { ok: true, value: hit.value, text: (hit.textContent || '').trim() };
+  }, { sel: SEL.statusDropdown, code: statusCode });
+
+  if (!ok || !ok.ok) {
+    throw new Error(`No matching status option for code "${statusCode}"`);
+  }
+}
+
+async function setEstado(page, SEL, code, noteMaybe) {
+  await selectStatusByCode(page, SEL, code);
+
+  if (noteMaybe) {
+    const ta = await page.$(SEL.noteTextarea);
     if (ta) {
-      await page.fill(CONFIG.SEL.noteTextarea, String(note));
+      await page.fill(SEL.noteTextarea, String(noteMaybe));
     }
   }
 
-  const save = await page.$(CONFIG.SEL.saveBtn);
+  const save = await page.$(SEL.saveBtn);
   if (!save) throw new Error('Save button not found');
-  await save.click();
 
-  await page.waitForLoadState('domcontentloaded', { timeout: CONFIG.TIMEOUT_MS });
+  await save.click();
+  await page.waitForLoadState('networkidle', { timeout: 120000 });
   await sleep(1200);
 }
 
-// ====== EXPRESS SERVER ======
-initFirebaseAdmin();
-const db = admin.firestore();
+// ---------------- Express app ----------------
 
 const app = express();
-app.use(cors());
 app.use(express.json({ limit: '1mb' }));
 
-// Para CapRover: NO 404 en /
+// ✅ Importante para CapRover: / debe devolver 200 (si no, te mata el contenedor)
 app.get('/', (req, res) => {
-  res.status(200).json({ ok: true, service: 'estados-hs', ts: new Date().toISOString() });
+  res.status(200).send('ok');
 });
 
 app.get('/health', (req, res) => {
-  res.status(200).json({ ok: true, busy, ts: new Date().toISOString() });
+  res.status(200).json({
+    ok: true,
+    service: 'estados-hs',
+    requireAuth: REQUIRE_AUTH,
+    hsCredDocPath: HS_CRED_DOC_PATH,
+    ts: new Date().toISOString(),
+  });
 });
 
-/**
- * POST /v1/homeserve/status
- * Body:
- * {
- *   "parteId": "12345678",
- *   "statusCode": "348",
- *   "followUpDate": "03/01/2026"   // opcional (dd/MM/yyyy o yyyy-MM-dd)
- *   "observation": "texto..."      // opcional
- * }
- */
-app.post('/v1/homeserve/status', async (req, res) => {
-  const auth = await verifyAuth(req);
-  if (!auth.ok) return res.status(auth.status).json({ ok: false, error: auth.error });
-
-  const parteId = (req.body?.parteId || req.body?.serviceNumber || req.body?.parte || '').toString().trim();
-  const statusCode = (req.body?.statusCode || req.body?.newStatusValue || req.body?.code || '').toString().trim();
-  const followUpDate = (req.body?.followUpDate || req.body?.dateString || '').toString().trim();
-  const observation = (req.body?.observation || req.body?.nota || req.body?.note || '').toString().trim();
-
-  if (!parteId || !statusCode) {
-    return res.status(400).json({
-      ok: false,
-      error: 'Missing parteId or statusCode',
-      example: { parteId: '28197832', statusCode: '348', followUpDate: '03/01/2026', observation: '...' },
-    });
-  }
-
-  if (busy) {
-    return res.status(409).json({ ok: false, error: 'BUSY', message: 'Server is processing another request' });
-  }
-
-  busy = true;
+// Endpoint principal
+app.post('/api/homeserve/change-status', async (req, res) => {
   const startedAt = new Date().toISOString();
 
   try {
-    const { user, pass } = await getHomeServeCreds(db);
+    // Auth si está activado
+    let decoded = null;
+    if (REQUIRE_AUTH) {
+      decoded = await verifyFirebaseIdToken(req);
+    }
 
-    await withBrowser(async (page) => {
-      await login(page, user, pass);
-      await openParte(page, parteId);
-      await setEstadoByCode(page, statusCode, followUpDate, observation);
+    const serviceNumberRaw = req.body?.serviceNumber ?? req.body?.parteId ?? req.body?.parte ?? req.body?.codigo;
+    const codeRaw = req.body?.code ?? req.body?.statusCode ?? req.body?.newStatusValue ?? req.body?.selectedCode;
+    const dateString = safeStr(req.body?.dateString ?? '').trim(); // no siempre se usa en portal, pero lo guardamos en nota si quieres
+    const observation = safeStr(req.body?.observation ?? req.body?.note ?? '').trim();
+
+    const serviceNumber = stripDigits(serviceNumberRaw);
+    const code = stripDigits(codeRaw) || safeStr(codeRaw).trim();
+
+    if (!serviceNumber || serviceNumber.length < 5) {
+      return res.status(400).json({ ok: false, error: 'Invalid serviceNumber' });
+    }
+    if (!code) {
+      return res.status(400).json({ ok: false, error: 'Missing status code' });
+    }
+
+    const creds = await loadHomeServeCreds();
+    const SEL = creds.selectors;
+
+    // Nota final (si quieres incluir fecha)
+    const finalNote = [observation, dateString ? `Fecha: ${dateString}` : ''].filter(Boolean).join(' | ');
+
+    const result = await withBrowser(async (page) => {
+      await loginHomeServe(page, creds);
+      await openParte(page, serviceNumber, SEL);
+      await setEstado(page, SEL, code, finalNote || null);
+      return { ok: true };
     });
 
     return res.json({
       ok: true,
-      parteId,
-      statusCode,
-      followUpDate: followUpDate || null,
-      observation: observation || null,
-      startedAt,
-      finishedAt: new Date().toISOString(),
-      uid: auth.uid,
+      startedAtISO: startedAt,
+      finishedAtISO: new Date().toISOString(),
+      serviceNumber,
+      code,
+      requireAuth: REQUIRE_AUTH,
+      uid: decoded?.uid || null,
+      result,
     });
 
   } catch (e) {
+    const msg = safeStr(e?.message || e);
+    log('ERROR change-status:', msg);
     return res.status(500).json({
       ok: false,
-      error: String(e?.message || e),
-      startedAt,
-      finishedAt: new Date().toISOString(),
+      error: msg,
+      startedAtISO: startedAt,
+      finishedAtISO: new Date().toISOString(),
     });
-  } finally {
-    busy = false;
   }
 });
 
-app.listen(PORT, () => {
-  console.log(`[estados-hs] listening on :${PORT}`);
-  console.log(`[estados-hs] HS_CRED_DOC_PATH=${CONFIG.HS_CRED_DOC_PATH}`);
-  console.log(`[estados-hs] REQUIRE_AUTH=${CONFIG.REQUIRE_AUTH ? '1' : '0'}`);
-});
\ No newline at end of file
+// 404 fallback (para que quede claro)
+app.use((req, res) => {
+  res.status(404).json({ ok: false, error: 'Not found' });
+});
+
+// ---------------- start + graceful shutdown ----------------
+
+const server = app.listen(PORT, () => {
+  log(`listening on :${PORT}`);
+  log(`HS_CRED_DOC_PATH=${HS_CRED_DOC_PATH}`);
+  log(`REQUIRE_AUTH=${REQUIRE_AUTH ? '1' : '0'}`);
+});
+
+function shutdown(signal) {
+  log(`received ${signal}, shutting down...`);
+  server.close(() => {
+    process.exit(0);
+  });
+  // por si algo se queda colgado
+  setTimeout(() => process.exit(0), 3000).unref();
+}
+
+process.on('SIGTERM', () => shutdown('SIGTERM'));
+process.on('SIGINT', () => shutdown('SIGINT'));
\ No newline at end of file