fix: appointmentStatus→status, missed call visibility, webhook callbackstatus, KB logging

- Renamed appointmentStatus to status in search + call-assist queries
- Missed calls worklist: removed agentName filter (shared FIFO queue)
- Webhook sets callbackstatus: PENDING_CALLBACK on missed calls
- AI chat: added KB content logging for debugging

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

src/call-assist/call-assist.service.ts

@@ -52,7 +52,7 @@ export class CallAssistService {
 
                 const apptResult = await this.platform.queryWithAuth<any>(
                     `{ appointments(first: 10, orderBy: [{ scheduledAt: DescNullsLast }]) { edges { node {
-                        id scheduledAt appointmentStatus doctorName department reasonForVisit patientId
+                        id scheduledAt status doctorName department reasonForVisit patientId
                     } } } }`,
                     undefined, authHeader,
                 );
@@ -63,7 +63,7 @@ export class CallAssistService {
                     parts.push('\nPAST APPOINTMENTS:');
                     for (const a of appts) {
                         const date = a.scheduledAt ? new Date(a.scheduledAt).toLocaleDateString('en-IN') : '?';
-                        parts.push(`- ${date}: ${a.doctorName ?? '?'} (${a.department ?? '?'}) — ${a.appointmentStatus}`);
+                        parts.push(`- ${date}: ${a.doctorName ?? '?'} (${a.department ?? '?'}) — ${a.status}`);
                     }
                 }
             } else if (callerPhone) {