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/components/call-desk/click-to-call-button.tsx

@@ -1,25 +1,43 @@
+import { useState } from 'react';
 import { Phone01 } from '@untitledui/icons';
 import { Button } from '@/components/base/buttons/button';
 import { useSip } from '@/providers/sip-provider';
+import { apiClient } from '@/lib/api-client';
+import { notify } from '@/lib/toast';
 
 interface ClickToCallButtonProps {
     phoneNumber: string;
+    leadId?: string;
     label?: string;
     size?: 'sm' | 'md';
 }
 
-export const ClickToCallButton = ({ phoneNumber, label, size = 'sm' }: ClickToCallButtonProps) => {
-    const { makeCall, isRegistered, isInCall } = useSip();
+export const ClickToCallButton = ({ phoneNumber, leadId, label, size = 'sm' }: ClickToCallButtonProps) => {
+    const { isRegistered, isInCall } = useSip();
+    const [dialing, setDialing] = useState(false);
+
+    const handleDial = async () => {
+        setDialing(true);
+        try {
+            await apiClient.post('/api/ozonetel/dial', { phoneNumber, leadId });
+            notify.success('Dialing', `Calling ${phoneNumber}...`);
+        } catch {
+            // apiClient.post already toasts the error
+        } finally {
+            setDialing(false);
+        }
+    };
 
     return (
         <Button
             size={size}
             color="primary"
             iconLeading={Phone01}
-            onClick={() => makeCall(phoneNumber)}
-            isDisabled={!isRegistered || isInCall || phoneNumber === ''}
+            onClick={handleDial}
+            isDisabled={!isRegistered || isInCall || !phoneNumber || dialing}
+            isLoading={dialing}
         >
-            {label ?? 'Call'}
+            {dialing ? 'Dialing...' : (label ?? 'Call')}
         </Button>
     );
 };