Synechron HubSpot MAM backend

Backend for the Synechron HubSpot MAM UI extension. This service exposes signed endpoints called from HubSpot card extensions via hubspot.fetch().

• POST /api/cards/company-deals — fan out a company-domain query across linked HubSpot portals and return open deals per portal.

Requests require a valid X-HubSpot-Signature-v3 header. Browser hits to these endpoints will 401.