fix: appointment/enquiry modals + team performance fallback

- Appointment form: converted from inline to modal dialog, removed Returning Patient checkbox
- Enquiry form: converted from inline to modal dialog
- Active call card: removed max-h-[50vh] scroll container, forms render as modals
- Team Performance: fallback agent list from call records when Ozonetel unavailable
- NPS/Time sections show placeholder when data unavailable

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

src/components/call-desk/enquiry-form.tsx

@@ -6,6 +6,7 @@ import { Select } from '@/components/base/select/select';
 import { TextArea } from '@/components/base/textarea/textarea';
 import { Checkbox } from '@/components/base/checkbox/checkbox';
 import { Button } from '@/components/base/buttons/button';
+import { ModalOverlay, Modal, Dialog } from '@/components/application/modals/modal';
 import { apiClient } from '@/lib/api-client';
 import { notify } from '@/lib/toast';
 
@@ -138,10 +139,11 @@ export const EnquiryForm = ({ isOpen, onOpenChange, callerPhone, onSaved }: Enqu
         }
     };
 
-    if (!isOpen) return null;
-
     return (
-        <div className="rounded-xl border border-secondary bg-primary p-4">
+        <ModalOverlay isOpen={isOpen} onOpenChange={onOpenChange} isDismissable>
+            <Modal className="max-w-xl">
+                <Dialog>
+                    <div className="p-4">
             <div className="flex items-center justify-between mb-4">
                 <div className="flex items-center gap-3">
                     <div className="flex size-8 items-center justify-center rounded-lg bg-warning-secondary">
@@ -208,6 +210,9 @@ export const EnquiryForm = ({ isOpen, onOpenChange, callerPhone, onSaved }: Enqu
                     {isSaving ? 'Saving...' : 'Log Enquiry'}
                 </Button>
             </div>
-        </div>
+                    </div>
+                </Dialog>
+            </Modal>
+        </ModalOverlay>
     );
 };