Show HN: PharmA2A, an open protocol for pharmacy-to-supplier orders on A2A

PharmA2A is an open protocol built on the A2A (Agent2Agent) framework that standardizes communication between pharmacies and their suppliers through five standardized JSON Schema messages. The protocol streamlines the ordering process for French community pharmacies by eliminating manual forms, emails, and phone calls while enabling suppliers to understand product performance on shelves when permitted. It is the first sector-specific dictionary built on A2A, with field names in French and strict rules ensuring no economic data is shared and only stated information is transmitted.