Add admin UI for TopicBriefing inspection and regeneration #68
Description
Context
The TopicBriefing model was added in #64. There is currently no admin interface for it.
What's needed
Administrators should be able to:
- View a topic's briefing (headline, editorial_content, record_content, generation_tier, generation_data)
- Manually trigger regeneration for a specific topic's briefing
- See generation metadata (last_full_generation_at, triggering_meeting, generation_tier)
This could be added to the existing admin topic show page as an expandable section, or as a separate admin/briefings resource.
Files
app/models/topic_briefing.rb— model existsapp/controllers/admin/— admin namespaceapp/views/admin/topics/show.html.erb— likely place to add briefing display