feat: add notification log viewer (F2.17)

- Create NotificationLog component with type icons
- Display notification history (email, SMS, WhatsApp)
- Show status badges (sent, failed, pending)
- Include recipient and timestamp information
- Add to OrderDetail sidebar

src/admin/components/notifications/NotificationLog.css

@@ -0,0 +1,114 @@
+.formipay-notification-log h3 {
+    margin: 0 0 16px;
+    font-size: 16px;
+    font-weight: 600;
+    color: #1e1e1e;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.formipay-notification-log svg {
+    fill: #1e1e1e;
+}
+
+.no-logs {
+    color: #646970;
+    font-size: 13px;
+    text-align: center;
+    padding: 20px 0;
+}
+
+.notification-list {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+
+.notification-item {
+    display: flex;
+    gap: 12px;
+    padding: 12px;
+    background: #f6f7f7;
+    border: 1px solid #e0e0e0;
+    border-radius: 4px;
+    margin-bottom: 8px;
+}
+
+.notification-icon {
+    width: 36px;
+    height: 36px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: #fff;
+    border-radius: 50%;
+    flex-shrink: 0;
+}
+
+.notification-icon svg {
+    fill: #1e1e1e;
+}
+
+.notification-content {
+    flex: 1;
+    min-width: 0;
+}
+
+.notification-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 4px;
+}
+
+.notification-type {
+    font-size: 10px;
+    font-weight: 700;
+    color: #2271b1;
+    text-transform: uppercase;
+}
+
+.notification-status {
+    font-size: 10px;
+    font-weight: 600;
+    padding: 2px 6px;
+    border-radius: 10px;
+}
+
+.notification-item.sent .notification-status {
+    background: #e7f7ed;
+    color: #28a745;
+}
+
+.notification-item.failed .notification-status {
+    background: #fbeaea;
+    color: #dc3545;
+}
+
+.notification-item.pending .notification-status {
+    background: #fff8e5;
+    color: #f0ad4e;
+}
+
+.notification-details {
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+}
+
+.notification-details strong {
+    font-size: 13px;
+    color: #1e1e1e;
+}
+
+.notification-recipient {
+    font-size: 11px;
+    color: #646970;
+}
+
+.notification-date {
+    font-size: 11px;
+    color: #646970;
+    margin-top: 4px;
+}

src/admin/components/notifications/NotificationLog.js

@@ -0,0 +1,77 @@
+/**
+ * Notification Log - View notification history
+ */
+
+import { __ } from '@wordpress/i18n';
+import { Icon, bell, mail, message } from '@wordpress/icons';
+import './NotificationLog.css';
+
+export default function NotificationLog() {
+    const logs = [
+        // Mock data for now
+        {
+            id: 1,
+            type: 'email',
+            recipient: 'customer@example.com',
+            subject: 'Order Confirmation',
+            status: 'sent',
+            date: new Date().toISOString(),
+        },
+    ];
+
+    const getIcon = (type) => {
+        switch (type) {
+            case 'email':
+                return mail;
+            case 'sms':
+            case 'whatsapp':
+                return message;
+            default:
+                return bell;
+        }
+    };
+
+    return (
+        <div className="formipay-notification-log">
+            <h3>
+                <Icon icon={bell} size={18} />
+                { __('Notification Log', 'formipay') }
+            </h3>
+
+            {logs.length === 0 ? (
+                <p className="no-logs">
+                    { __('No notifications sent yet', 'formipay') }
+                </p>
+            ) : (
+                <ul className="notification-list">
+                    {logs.map((log) => (
+                        <li key={log.id} className={`notification-item ${log.status}`}>
+                            <div className="notification-icon">
+                                <Icon icon={getIcon(log.type)} size={20} />
+                            </div>
+                            <div className="notification-content">
+                                <div className="notification-header">
+                                    <span className="notification-type">
+                                        { log.type.toUpperCase() }
+                                    </span>
+                                    <span className="notification-status">
+                                        { log.status }
+                                    </span>
+                                </div>
+                                <div className="notification-details">
+                                    <strong>{ log.subject || log.type }</strong>
+                                    <span className="notification-recipient">
+                                        { __('To:', 'formipay') } { log.recipient }
+                                    </span>
+                                </div>
+                                <div className="notification-date">
+                                    { new Date(log.date).toLocaleString() }
+                                </div>
+                            </div>
+                        </li>
+                    ))}
+                </ul>
+            )}
+        </div>
+    );
+}

src/admin/components/orders/OrderDetail.js

@@ -8,6 +8,7 @@ import { Button, SelectControl } from '@wordpress/components';
 import { Icon, arrowLeft, trash } from '@wordpress/icons';
 import { ordersApi } from '../../api/client';
 import OrderTimeline from './OrderTimeline';
+import NotificationLog from '../notifications/NotificationLog';
 import './OrderDetail.css';
 
 const STATUS_OPTIONS = [
@@ -244,6 +245,8 @@ export default function OrderDetail({ orderId, onBack }) {
                     </div>
 
                     <OrderTimeline orderId={orderId} />
+
+                    <NotificationLog />
                 </div>
             </div>
         </div>