fix: disable Book Appt/Enquiry until customer answers outbound call (#568)

For outbound calls, SIP state transitions to 'active' when the agent's
bridge connects — before the customer picks up. Ozonetel state stays
'calling' until customer answers, then goes to 'in-call'.

Now reads ozonetelState from useAgentState and computes customerAnswered
(callState=active AND ozonetelState!=calling). Action buttons (Book Appt,
Enquiry, Transfer) disabled until customerAnswered is true.

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

src/components/call-desk/active-call-card.tsx

@@ -105,7 +105,11 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
 
     const agentConfig = localStorage.getItem('helix_agent_config');
     const agentIdForState = agentConfig ? (() => { try { return JSON.parse(agentConfig).ozonetelAgentId; } catch { return null; } })() : null;
-    const { supervisorPresence } = useAgentState(agentIdForState);
+    const { state: ozonetelState, supervisorPresence } = useAgentState(agentIdForState);
+    // For outbound calls, SIP goes 'active' when the agent's bridge connects
+    // (before customer answers). Ozonetel state stays 'calling' until customer
+    // picks up, then transitions to 'in-call'. Use this to gate action buttons.
+    const customerAnswered = callState === 'active' && ozonetelState !== 'calling';
 
     const callDirectionRef = useRef(callState === 'ringing-out' ? 'OUTBOUND' : 'INBOUND');
     const wasAnsweredRef = useRef(callState === 'active');
@@ -275,7 +279,7 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
 
     // Active call
     if (callState === 'active' || dispositionOpen) {
-        wasAnsweredRef.current = true;
+        if (customerAnswered) wasAnsweredRef.current = true;
         return (
             <>
                 <div className={cx('flex flex-col rounded-xl border border-brand bg-primary overflow-hidden', (appointmentOpen || enquiryOpen || transferOpen) && 'flex-1 min-h-0')}>
@@ -357,17 +361,17 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
 
                             <Button size="sm" color={appointmentOpen ? 'primary' : 'secondary'}
                                 iconLeading={({ className, ...rest }: any) => <FontAwesomeIcon icon={faCalendarPlus} className={className} {...rest} />}
-                                isDisabled={!wasAnsweredRef.current}
+                                isDisabled={!customerAnswered}
                                 onClick={() => { setAppointmentOpen(!appointmentOpen); setEnquiryOpen(false); setTransferOpen(false); }}>
                                 {leadAppointments.length > 0 ? 'New / Reschedule Appt' : 'New Appt'}
                             </Button>
                             <Button size="sm" color={enquiryOpen ? 'primary' : 'secondary'}
                                 iconLeading={({ className, ...rest }: any) => <FontAwesomeIcon icon={faClipboardQuestion} className={className} {...rest} />}
-                                isDisabled={!wasAnsweredRef.current}
+                                isDisabled={!customerAnswered}
                                 onClick={() => { setEnquiryOpen(!enquiryOpen); setAppointmentOpen(false); setTransferOpen(false); }}>Enquiry</Button>
                             <Button size="sm" color={transferOpen ? 'primary' : 'secondary'}
                                 iconLeading={({ className, ...rest }: any) => <FontAwesomeIcon icon={faPhoneArrowRight} className={className} {...rest} />}
-                                isDisabled={!wasAnsweredRef.current}
+                                isDisabled={!customerAnswered}
                                 onClick={() => { setTransferOpen(!transferOpen); setAppointmentOpen(false); setEnquiryOpen(false); }}>Transfer</Button>
 
                             <Button size="sm" color="primary-destructive" className="ml-auto"