Internal pipeline that takes a PUBLICAR.md, renders 1080×1080 carousel slides
via Cloudflare Browser Rendering, uploads PNGs to R2, and posts to Instagram + LinkedIn.
POST /api/render-html — preview a single slide as HTMLPOST /api/publish — full pipeline (supports dryRun)GET /r2/<key> — R2 object proxycurl -X POST /api/publish \
-H "Content-Type: application/json" \
-d '{"publicarMd": "...", "dryRun": true}'