Requirements

Goals

• Provide a Health Check step that enqueues an individual background health-check job for each selected source.
• Display a live-updating results table with status icons (healthy/unhealthy) updated via Turbo Streams as jobs complete.
• Show a progress indicator (counts completed/total) and unselect unhealthy sources by default while allowing users to re-select them.
• Block navigation forward if no healthy sources remain selected (unless user manually re-selects an unhealthy source).

Technical Considerations

• Use Solid Queue for background jobs; create or reuse a HealthCheckJob that runs existing feed health check logic and broadcasts results on a Turbo Stream channel/topic for the ImportSession or user.
• Store health check results back into ImportSession.parsed_sources entries (health_status, error) so step state is persistent and viewable if refreshed while session exists. Ensure ImportSession is implemented with a standard integer-based user reference (user_id as integer).
• Implement server-side cancellation semantics: if the user navigates away from the health-check step before all jobs finish, mark in ImportSession and ensure any remaining jobs do not update transient UI state or re-broadcast for an expired session.
• Ensure progress updates and row updates follow the engine’s Turbo Streams conventions and use existing broadcasters patterns.

Dependencies

• Build Preview Table & Selection Persistence (selected set to health-check)