Prepara deploy de Luisa + image-worker: Dockerfiles + GET endpoints

- Dockerfiles multistage (node:20-alpine) + .dockerignore para mvp/Whatsapp-bot
  (expone 3000+3001, persiste prompts) y mvp/image-worker (expone 3001).
- Añade los 2 GET que el bot necesita y faltaban en la API:
  GET /api/leads/:id (estado del lead) y GET /api/leads/:id/conversacion (historial).
- Limpia el package.json/lock de la raíz (baileys colado por error; no es workspace).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

mvp/image-worker/Dockerfile

@@ -0,0 +1,19 @@
+# Worker de renders (NestJS). Recibe POST /perfil-completo, genera las imágenes "después" con IA
+# (OpenRouter) y las devuelve a la app vía POST /api/leads/:id/ingesta. Stateless.
+FROM node:20-alpine AS build
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM node:20-alpine
+WORKDIR /app
+ENV NODE_ENV=production
+ENV PORT=3001
+COPY package*.json ./
+RUN npm ci --omit=dev && npm cache clean --force
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/prompts ./prompts
+EXPOSE 3001
+CMD ["node", "dist/main"]