* feat: replace getScopeStats with getScopes and update related tests
bug: lastSeen/sentAt was set to string instead of number by mistake
* feat: update timestamp handling and formatting across components
- WS messages carry epoch ms now instead of ISO strings
- new Timestamp component (relative/absolute), used in RouteTable and RouteDetailPanel
- IataChip and ScopeTag chips
- TraceDetailPanel and TraceList for trace drill-down
- tests updated for the timestamp change
