- Add user_agent column to bots table (migration-safe)
- Store raw UA string (up to 300 chars) alongside ua_family on insert
- selfObserve stores raw UA from incoming request headers
- getStats() adds top_user_agents query (top 15 by count, last 30d)
- Dashboard: revert actions+reasons to 2-col, remove embedded UA col
- Dashboard: new separate panel below actions+reasons showing raw UA
strings with hit counts in monospace, truncated with title tooltip
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>