fix: Book Appt pills + AI chat clears on call end

Book Appt defect (QA-559): no visible path to edit an existing
appointment — the Upcoming section in the context panel collapses
automatically when the AI auto-summary fires, hiding the Edit action.

Fix: render appointment pills above the AppointmentForm drawer when
the returning patient has upcoming appointments:
  [+ New]  [Apr 24 · Dr. Harpreet  Edit]  [May 02 · Dr. Meena  Edit]
- Click [+ New] (default): empty form, create mode
- Click Edit on a pill: form prefills with that appointment, edit mode
- Closing the drawer resets the selected pill

Separate defect: AI chat persisted after call ended — stale summary
from the previous call stayed visible on the worklist. ai-chat-panel
now wipes messages + resets the auto-fire guard when
callerContext.leadId transitions to null (call dropped/released, no
selected lead).

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

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

@@ -1,10 +1,11 @@
-import { useState, useRef, useEffect } from 'react';
+import { useState, useRef, useEffect, useMemo } from 'react';
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
 import {
     faPhone, faPhoneHangup, faMicrophone, faMicrophoneSlash,
-    faPause, faPlay, faCalendarPlus,
+    faPause, faPlay, faCalendarPlus, faPlus, faPenToSquare,
     faPhoneArrowRight, faRecordVinyl, faClipboardQuestion,
 } from '@fortawesome/pro-duotone-svg-icons';
+import { useData } from '@/providers/data-provider';
 import { Button } from '@/components/base/buttons/button';
 import { Badge } from '@/components/base/badges/badges';
 import { useSetAtom } from 'jotai';
@@ -16,7 +17,7 @@ import type { CallAction } from './disposition-modal';
 import { AppointmentForm } from './appointment-form';
 import { TransferDialog } from './transfer-dialog';
 import { EnquiryForm } from './enquiry-form';
-import { formatPhone } from '@/lib/format';
+import { formatPhone, formatShortDate } from '@/lib/format';
 import { apiClient } from '@/lib/api-client';
 import { useAuth } from '@/providers/auth-provider';
 import { useAgentState } from '@/hooks/use-agent-state';
@@ -44,6 +45,10 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
     const setCallerNumber = useSetAtom(sipCallerNumberAtom);
     const setCallUcid = useSetAtom(sipCallUcidAtom);
     const [appointmentOpen, setAppointmentOpen] = useState(false);
+    // Which existing appointment is being edited (null = creating a new one).
+    // The Book Appt drawer shows pills: [+ New] + one per upcoming appointment.
+    // Clicking Edit on a pill sets this; clicking + New clears it.
+    const [editingApptId, setEditingApptId] = useState<string | null>(null);
     const [transferOpen, setTransferOpen] = useState(false);
     const [recordingPaused, setRecordingPaused] = useState(false);
     const [enquiryOpen, setEnquiryOpen] = useState(false);
@@ -62,6 +67,28 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
         });
     };
 
+    // Upcoming appointments for this caller (if returning patient) — drives
+    // the pill row above AppointmentForm so the agent can edit existing
+    // bookings in addition to creating new ones.
+    const { appointments } = useData();
+    const leadAppointments = useMemo(() => {
+        const patientId = (lead as any)?.patientId;
+        if (!patientId) return [];
+        return appointments
+            .filter((a) =>
+                a.patientId === patientId
+                && a.appointmentStatus !== 'CANCELLED'
+                && a.appointmentStatus !== 'NO_SHOW'
+                && a.appointmentStatus !== 'COMPLETED',
+            )
+            .sort((a, b) => new Date(a.scheduledAt ?? '').getTime() - new Date(b.scheduledAt ?? '').getTime());
+    }, [appointments, lead]);
+
+    const editingAppt = useMemo(
+        () => (editingApptId ? leadAppointments.find((a) => a.id === editingApptId) ?? null : null),
+        [leadAppointments, editingApptId],
+    );
+
     const agentConfig = localStorage.getItem('helix_agent_config');
     const agentIdForState = agentConfig ? (() => { try { return JSON.parse(agentConfig).ozonetelAgentId; } catch { return null; } })() : null;
     const { supervisorPresence } = useAgentState(agentIdForState);
@@ -335,14 +362,76 @@ export const ActiveCallCard = ({ lead, callerPhone, missedCallId, onCallComplete
                                 }}
                             />
                         )}
+                            {appointmentOpen && leadAppointments.length > 0 && (
+                                <div className="flex flex-wrap gap-2 mb-3">
+                                    <button
+                                        type="button"
+                                        onClick={() => setEditingApptId(null)}
+                                        className={cx(
+                                            'flex items-center gap-1.5 rounded-lg border-2 px-3 py-2 text-xs font-semibold transition duration-100 ease-linear',
+                                            !editingApptId
+                                                ? 'border-brand bg-brand-primary text-brand-secondary'
+                                                : 'border-secondary bg-primary text-secondary hover:bg-primary_hover',
+                                        )}
+                                    >
+                                        <FontAwesomeIcon icon={faPlus} className="size-3" />
+                                        New
+                                    </button>
+                                    {leadAppointments.map((appt) => (
+                                        <div
+                                            key={appt.id}
+                                            className={cx(
+                                                'flex items-center gap-2 rounded-lg border-2 px-3 py-2 text-xs',
+                                                editingApptId === appt.id
+                                                    ? 'border-brand bg-brand-primary'
+                                                    : 'border-secondary bg-primary',
+                                            )}
+                                        >
+                                            <div className="flex flex-col">
+                                                <span className="font-semibold text-primary">
+                                                    {appt.scheduledAt ? formatShortDate(appt.scheduledAt) : 'No date'}
+                                                </span>
+                                                <span className="text-[11px] text-tertiary">
+                                                    {appt.doctorName ?? 'Doctor'}
+                                                </span>
+                                            </div>
+                                            <button
+                                                type="button"
+                                                onClick={() => setEditingApptId(appt.id)}
+                                                className="flex items-center gap-1 rounded-md px-2 py-1 text-[11px] font-semibold text-brand-secondary hover:bg-brand-primary_hover transition duration-100 ease-linear"
+                                            >
+                                                <FontAwesomeIcon icon={faPenToSquare} className="size-3" />
+                                                Edit
+                                            </button>
+                                        </div>
+                                    ))}
+                                </div>
+                            )}
+
                             <AppointmentForm
                                 isOpen={appointmentOpen}
-                                onOpenChange={setAppointmentOpen}
+                                onOpenChange={(open) => {
+                                    setAppointmentOpen(open);
+                                    if (!open) setEditingApptId(null);
+                                }}
                                 callerNumber={callerPhone}
                                 leadName={fullName || null}
                                 leadId={lead?.id ?? null}
                                 patientId={(lead as any)?.patientId ?? null}
-                                onSaved={handleAppointmentSaved}
+                                existingAppointment={editingAppt ? {
+                                    id: editingAppt.id,
+                                    scheduledAt: editingAppt.scheduledAt ?? '',
+                                    doctorName: editingAppt.doctorName ?? '',
+                                    doctorId: editingAppt.doctorId ?? undefined,
+                                    department: editingAppt.department ?? '',
+                                    clinicId: editingAppt.clinicId ?? undefined,
+                                    reasonForVisit: editingAppt.reasonForVisit ?? undefined,
+                                    status: editingAppt.appointmentStatus ?? 'SCHEDULED',
+                                } : null}
+                                onSaved={(outcome) => {
+                                    setEditingApptId(null);
+                                    handleAppointmentSaved(outcome);
+                                }}
                             />
 
                             <EnquiryForm

src/components/call-desk/ai-chat-panel.tsx

@@ -50,14 +50,26 @@ export const AiChatPanel = ({ callerContext, onChatStart }: AiChatPanelProps) =>
     }, [messages, onChatStart]);
 
     // Auto-fire a patient-summary request when a caller with a leadId appears
-    // on the panel. Resets whenever the caller changes (new incoming call) so
+    // on the panel. Resets whenever the caller changes (new incoming call) or
-    // each call starts fresh. The sidecar's AI agent inspects the leadId and
+    // the call ends (leadId clears), so each call starts fresh. The sidecar's
-    // replies with appointment/disposition/notes history when the caller is
+    // AI agent inspects the leadId and replies with appointment/disposition/
-    // a returning patient, or a brief "net-new caller" ack otherwise.
+    // notes history when the caller is a returning patient.
     const autoFiredForLeadRef = useRef<string | null>(null);
     useEffect(() => {
         const leadId = callerContext?.leadId ?? null;
-        if (!leadId) return;
+
+        // Call ended or no caller — wipe the panel so the next caller's
+        // context doesn't bleed over and the agent isn't staring at a stale
+        // summary in the worklist view between calls.
+        if (!leadId) {
+            if (autoFiredForLeadRef.current !== null) {
+                autoFiredForLeadRef.current = null;
+                setMessages([]);
+                chatStartedRef.current = false;
+            }
+            return;
+        }
+
         if (autoFiredForLeadRef.current === leadId) return;
 
         // New caller — clear any prior chat state and fire the summary prompt.