feat(23-04): add admin index tile for Phishing Automation

- Adds a Phishing Automation tile to the Tools & Data section of /admin
- Links to /admin/phishing-automation, imports Bot icon from lucide-react

app/admin/page.tsx

@@ -28,6 +28,7 @@ import {
   ShieldCheck,
   Settings as SettingsIcon,
   Shield,
+  Bot,
   DollarSign,
   CalendarClock,
   Building2,
@@ -244,6 +245,12 @@ export default function AdminIndexPage() {
           icon: Building2,
           description: 'Control which companies appear in dashboard KPIs and ticket analytics',
         },
+        {
+          title: 'Phishing Automation',
+          href: '/admin/phishing-automation',
+          icon: Bot,
+          description: 'Per-company opt-in gate for automatic phishing parse / classify / acknowledge-note stages',
+        },
         {
           title: 'RMM Overshell',
           href: '/admin/rmm-overshell',