- Promote Insights to top-level nav at /insights with source/urgency/status filters
- Unified insights page shows all sources (Preseem, Gaiia, SNMP, System)
- Bulk select/dismiss support
- Integration pages now show sync schedule and next sync estimate
- Expose sync_interval_minutes as editable config field
- Add tab navigation between integration sub-pages
- Dashboard insights section links to /insights
- Integration 'Network Insights' link now points to /insights?source=preseem
- Add product roadmap (ROADMAP.md)
