feat: call desk redesign — 2-panel layout, collapsible sidebar, inline AI, ringtone

- Collapsible sidebar with Jotai atom (icon-only mode, persisted to localStorage)
- 2-panel call desk: worklist (60%) + context panel (40%) with AI + Lead 360 tabs
- Inline AI call prep card — known lead summary or unknown caller script
- Active call card with compact Answer/Decline buttons
- Worklist panel with human-readable labels, priority badges, click-to-select
- Context panel auto-switches to Lead 360 when lead selected or call incoming
- Browser ringtone via Web Audio API on incoming calls
- Sonner + Untitled UI IconNotification for toast system
- apiClient pattern: centralized post/get/graphql with auto-toast on errors
- Remove duplicate avatar from top bar, hide floating widget on call desk
- Fix Link routing in collapsed sidebar (was using <a> causing full page reload)
- Fix GraphQL field names: adStatus→status, platformUrl needs subfield selection
- Silent mode for DataProvider queries to prevent toast spam

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/providers/data-provider.tsx

@@ -78,23 +78,24 @@ export const DataProvider = ({ children }: DataProviderProps) => {
         setError(null);
 
         try {
+            const gql = <T,>(query: string) => apiClient.graphql<T>(query, undefined, { silent: true }).catch(() => null);
+
             const [leadsData, campaignsData, adsData, followUpsData, activitiesData, callsData] = await Promise.all([
-                apiClient.graphql<any>(LEADS_QUERY),
-                apiClient.graphql<any>(CAMPAIGNS_QUERY),
-                apiClient.graphql<any>(ADS_QUERY),
-                apiClient.graphql<any>(FOLLOW_UPS_QUERY),
-                apiClient.graphql<any>(LEAD_ACTIVITIES_QUERY),
-                apiClient.graphql<any>(CALLS_QUERY),
+                gql<any>(LEADS_QUERY),
+                gql<any>(CAMPAIGNS_QUERY),
+                gql<any>(ADS_QUERY),
+                gql<any>(FOLLOW_UPS_QUERY),
+                gql<any>(LEAD_ACTIVITIES_QUERY),
+                gql<any>(CALLS_QUERY),
             ]);
 
-            setLeads(transformLeads(leadsData));
-            setCampaigns(transformCampaigns(campaignsData));
-            setAds(transformAds(adsData));
-            setFollowUps(transformFollowUps(followUpsData));
-            setLeadActivities(transformLeadActivities(activitiesData));
-            setCalls(transformCalls(callsData));
+            if (leadsData) setLeads(transformLeads(leadsData));
+            if (campaignsData) setCampaigns(transformCampaigns(campaignsData));
+            if (adsData) setAds(transformAds(adsData));
+            if (followUpsData) setFollowUps(transformFollowUps(followUpsData));
+            if (activitiesData) setLeadActivities(transformLeadActivities(activitiesData));
+            if (callsData) setCalls(transformCalls(callsData));
         } catch (err: any) {
-            console.error('Failed to fetch platform data:', err);
             setError(err.message ?? 'Failed to load data');
         } finally {
             setLoading(false);