feat: switch outbound to direct SIP call from browser

Instead of Kookoo outbound → IVR → dial back to SIP (broken bridge),
make the call directly from JsSIP in the browser. The SIP INVITE goes
through Ozonetel's SIP server to the PSTN. No intermediary needed.

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

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

@@ -4,8 +4,6 @@ import { useSetAtom } from 'jotai';
 import { Button } from '@/components/base/buttons/button';
 import { useSip } from '@/providers/sip-provider';
 import { sipCallStateAtom, sipCallerNumberAtom } from '@/state/sip-state';
-import { setOutboundPending } from '@/state/sip-manager';
-import { apiClient } from '@/lib/api-client';
 import { notify } from '@/lib/toast';
 
 interface ClickToCallButtonProps {
@@ -15,8 +13,8 @@ interface ClickToCallButtonProps {
     size?: 'sm' | 'md';
 }
 
-export const ClickToCallButton = ({ phoneNumber, leadId, label, size = 'sm' }: ClickToCallButtonProps) => {
-    const { isRegistered, isInCall } = useSip();
+export const ClickToCallButton = ({ phoneNumber, label, size = 'sm' }: ClickToCallButtonProps) => {
+    const { isRegistered, isInCall, makeCall } = useSip();
     const [dialing, setDialing] = useState(false);
     const setCallState = useSetAtom(sipCallStateAtom);
     const setCallerNumber = useSetAtom(sipCallerNumberAtom);
@@ -24,18 +22,16 @@ export const ClickToCallButton = ({ phoneNumber, leadId, label, size = 'sm' }: C
     const handleDial = async () => {
         setDialing(true);
 
-        // Immediately show the call UI and mark outbound pending for auto-answer
+        // Show call UI immediately
         setCallState('ringing-out');
         setCallerNumber(phoneNumber);
-        setOutboundPending(true);
 
         try {
-            await apiClient.post('/api/ozonetel/dial', { phoneNumber, leadId });
+            // Direct SIP call from browser
+            makeCall(phoneNumber);
         } catch {
-            // API error — reset call state
             setCallState('idle');
             setCallerNumber(null);
-            setOutboundPending(false);
             notify.error('Dial Failed', 'Could not place the call');
         } finally {
             setDialing(false);