nhcx-communication

Add NHCX communication to a hospital information system or a standalone claims desk. Receive the payer's CommunicationRequest, classify it as a query, a notification or a note, acknowledge notifications at once, and answer queries with the TaskBundle reply on the request's own thread, held to the pinned bundle. Starts by checking whether the app already receives payer messages or answers queries, and whether it keeps the pre-auth or claim a query is about, then builds, extends or reuses only what is missing. Self-contained; needs no other skill installed. Use for payer queries, notifications, the inbox, the communication reply, NHCX use case B4, flow steps F9b (communication payer) and F12b.