Declare the fields the backend already writes and the UI was discarding: CallRecord gains location_coords, units, vehicles, cleared_units, duplicate_of, srcaddr (intelligence.py ~315-327); IncidentRecord gains units_active, units_cleared, location_mentions, last_thin_at (incident_correlator.py _attach, ~1270-1300). Filter duplicate_of client-side in useCalls.ts's three hooks (useCalls, useCallsByIncident, useActiveCalls) so a call flagged as a second node's recording of the same transmission no longer renders twice. Client-side rather than a where() clause to avoid a new composite index. Removes the two now-resolved DEFERRED.md entries (dedup/useCalls, lib/types.ts field gaps). Per UI_REDESIGN.md chunk 3.