Slack Integration: Domain-level exclusion (allow/deny lists) for ingestion and replies

I want the ability to set a domain-level exclusion (allow/deny list) on the Slack integration (at both the workspace and per-channel level). When an event is processed, if the author's email domain matches our excluded list, Fibi should not ingest the post or trigger AI/automated replies. This is critical for teams with large volumes of internal users who aren't necessarily added as teammates in Featurebase but frequently post in Slack Connect channels, causing Fibi to treat them as end-customers and respond to internal banter or celebratory posts.