fix: stop the network-graph focus being cleared before the graph reads it

The redirect focus person was still landing on the top repeat offender
even after the args/result coercion fix. Root cause was a state-clearing
race: App clears requestedNetworkFocus in onInitialTabConsumed right after
the dashboard mounts, and Dashboard passed that live prop straight to
NetworkGraph. The focus flipped 6584 -> undefined on the very next render,
NetworkGraph's effect re-ran, cancelled the focused fetch, and refetched
without a focus -- selecting repeat_offenders[0].

Capture networkFocusPersonId into dashboard state once at mount (mirroring
how activeTab captures initialTab) so clearing the App-level prop can no
longer retrigger the graph.

Author: SarmaHighOnCode

frontend/src/components/Dashboard.tsx

@@ -274,6 +274,13 @@ export default function Dashboard({
   const [error, setError] = useState<string | null>(null);
   const [activeTab, setActiveTab] = useState<TabId>(initialTab ?? "overview");
   const [briefEmailStatus, setBriefEmailStatus] = useState<string | null>(null);
+  // Capture the redirect focus person ONCE at mount, same as activeTab does
+  // with initialTab. onInitialTabConsumed (below) clears the App-level prop
+  // right after mount; if NetworkGraph read the live prop it would see the
+  // focus flip to undefined and refetch without it, landing on the top repeat
+  // offender instead of the person the officer asked about. Capturing here
+  // pins the focus for this dashboard instance's lifetime.
+  const [networkFocus] = useState<number | undefined>(networkFocusPersonId);
 
   // Consume the redirect-requested tab once on mount so a later plain
   // re-entry to the dashboard (no new chat redirect) defaults to "overview".
@@ -642,7 +649,7 @@ export default function Dashboard({
 
           {activeTab === "geo" && <GeoIntelligence user={user} />}
           {activeTab === "network" && (
-            <NetworkGraph user={user} focusPersonId={networkFocusPersonId} />
+            <NetworkGraph user={user} focusPersonId={networkFocus} />
           )}
           {activeTab === "crime" && <CrimeIntelligence user={user} />}
           {activeTab === "strategic" && <StrategicIntelligence user={user} />}