Add Dockerfiles, .dockerignore and brand logo

- apps/api/Dockerfile: multi-stage pnpm build, runtime node:22-alpine, port 3001
- apps/web/Dockerfile: multi-stage pnpm + Vite, runtime nginx:alpine with SPA config
- .dockerignore: excludes node_modules, dist, .env, .git, IDE folders, design docs
- Brand logo (naturcalabacera.webp) integrated as favicon, sidebar icon, header logo
- index.html title updated to 'Naturcalabacera · Reservas'

apps/api/Dockerfile

@@ -0,0 +1,38 @@
+# syntax=docker/dockerfile:1
+
+# ───── Stage 1: build ─────
+FROM node:22-alpine AS builder
+WORKDIR /repo
+RUN corepack enable
+
+# Manifiestos primero (para cachear pnpm install si no cambian deps)
+COPY pnpm-workspace.yaml package.json pnpm-lock.yaml ./
+COPY packages/shared/package.json ./packages/shared/
+COPY apps/api/package.json ./apps/api/
+
+RUN pnpm install --frozen-lockfile
+
+# Código fuente
+COPY packages/shared ./packages/shared
+COPY apps/api ./apps/api
+
+# Compila TypeScript del api
+RUN pnpm --filter @naturcalabacera/api build
+
+# Carpeta de despliegue self-contained con node_modules de producción
+RUN pnpm --filter @naturcalabacera/api deploy --prod /out
+
+# Copia plantillas HTML al dist (tsc no las copia)
+RUN cp -r apps/api/src/templates /out/dist/templates
+
+# ───── Stage 2: runtime ─────
+FROM node:22-alpine
+WORKDIR /app
+ENV NODE_ENV=production
+
+COPY --from=builder /out/dist ./dist
+COPY --from=builder /out/node_modules ./node_modules
+COPY --from=builder /out/package.json ./package.json
+
+EXPOSE 3001
+CMD ["node", "dist/index.js"]