Frontend redesign chunk 3: type layer honesty and the duplicate fix

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.

drb-frontend/lib/useCalls.ts

@@ -52,10 +52,17 @@ export function useCalls(limitCount = 50, dateFrom?: Date, dateTo?: Date) {
       const toISO = (v: any): string | null =>
         v?.toDate?.()?.toISOString?.() ?? (typeof v === "string" ? v : null);
       unsubFirestore = onSnapshot(q, (snap) => {
-        setCalls(snap.docs.map((d) => {
-          const data = d.data();
-          return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
-        }));
+        const docs = snap.docs
+          .map((d) => {
+            const data = d.data();
+            return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
+          })
+          // dedup.py flags a second node's recording of the same transmission
+          // with duplicate_of set to the canonical call_id — filtered client-
+          // side (not a where() clause) so this doesn't need a new composite
+          // index alongside the existing org_id/started_at query.
+          .filter((c) => !c.duplicate_of);
+        setCalls(docs);
         setLoading(false);
       }, (err: FirestoreError) => { console.error("useCalls:", err); setError(err.message); setLoading(false); });
     });
@@ -92,10 +99,12 @@ export function useCallsByIncident(incidentId: string | null) {
         where("incident_ids", "array-contains", incidentId)
       );
       unsubFirestore = onSnapshot(q, (snap) => {
-        const docs = snap.docs.map((d) => {
-          const data = d.data();
-          return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
-        });
+        const docs = snap.docs
+          .map((d) => {
+            const data = d.data();
+            return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
+          })
+          .filter((c) => !c.duplicate_of);
         docs.sort((a, b) => a.started_at.localeCompare(b.started_at));
         setCalls(docs);
         setLoading(false);
@@ -131,10 +140,14 @@ export function useActiveCalls() {
       const toISO = (v: any): string | null =>
         v?.toDate?.()?.toISOString?.() ?? (typeof v === "string" ? v : null);
       unsubFirestore = onSnapshot(q, (snap) => {
-        setCalls(snap.docs.map((d) => {
-          const data = d.data();
-          return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
-        }));
+        setCalls(
+          snap.docs
+            .map((d) => {
+              const data = d.data();
+              return { ...data, started_at: toISO(data.started_at) ?? "", ended_at: toISO(data.ended_at) } as CallRecord;
+            })
+            .filter((c) => !c.duplicate_of)
+        );
       }, (err: FirestoreError) => { console.error("useActiveCalls:", err); });
     });