- Fix broken route paths in dashboard (/discovery, /subscribers/trace, /config-changes)
- Fix insights empty state settings link (org-scoped route)
- Add underscores to all 86400 literals across 6 files
- Alphabetize aliases in search.ex and agent_channel.ex
- Extract changelog parser helper to reduce nesting
- Extract dashboard impact calculation to reduce nesting
- Refactor agent_channel config change detection (pattern match, extract function)
- Combine double Enum.reject into single call in trace.ex
- Fix line length in trace.ex search query
- Replace length/1 > 0 with != [] in trace_live
- Run mix format on all files
- Health status dot (green/yellow/red/gray) from worst-case check state
- Relative 'last seen' with color-coded staleness thresholds
- Response time badge from latest monitoring check
- Subscriber count badge from Gaiia inventory items
- Batch queries to avoid N+1: Monitoring.get_device_health_summary/1,
Monitoring.get_device_latest_response_times/1,
Gaiia.get_device_subscriber_counts/1
