Descrizione
Invia messaggi a canali Discord via Webhook (semplice, no bot) o Bot API (avanzato, reactions/threads). Supporta plain text + embed cards + file attachments + mentions (@user/@role/@here). Output: { messageId, channelId, sentAt, webhookOk }. Use case: notify team su run workflow falliti, deploy alert con embed status, community announcements automatici post-blog, monitoraggio uptime con embed color-coded, thread reply per discussion gruppo support.
