docs(admin): add WHP super-admin section (5 draft articles)

Adds /whp/admin/ with: overview, server-settings, coraza-waf,
site-monitoring, user-management. Articles are product-neutral
(no VDS in titles or required framing) since super admin may be
offered as a separate service later. They're marked Draft via:

- 'Draft' sidebar badge on the group + each article
- A draft callout partial at the top of every page noting WIP

The super-admin-callout partial (renamed from vds-only-callout)
mentions VDS as today's most common way to get super admin without
locking the docs to that single product.

src/content/docs/whp/admin/overview.mdx

@@ -0,0 +1,44 @@
+---
+title: Admin overview
+description: What WHP super admin unlocks — server-wide controls for services, security rules, monitoring, and users.
+sidebar:
+  order: 1
+  badge:
+    text: Draft
+    variant: caution
+---
+
+import SuperAdmin from '~/content/partials/super-admin-callout.mdx';
+import Draft from '~/content/partials/draft-callout.mdx';
+import Support from '~/content/partials/support-link.mdx';
+
+<SuperAdmin />
+
+<Draft />
+
+## What super admin unlocks
+
+The same WHP panel you'd use on a customer account scales up: customers with **super admin** access also see server-wide pages for managing services, firewall rules, monitoring policy, and users. The customer-facing sections (Sites, Domains, Email, etc.) work the same way; the admin sections sit alongside them, gated to admins.
+
+Today, super admin is most commonly handed to customers running a [Virtual Dedicated Server](https://anhonesthost.com/vds) — they get full server control as part of the plan.
+
+## What's in this section
+
+- **[Server settings & services](/whp/admin/server-settings/)** — restart services, manage modules and runtimes, edit server-wide configuration.
+- **[Coraza WAF rules](/whp/admin/coraza-waf/)** — view, tune, and tune out web-application-firewall rules across all your sites.
+- **[Site Monitoring rules](/whp/admin/site-monitoring/)** — manage the rules that drive Site Monitoring alerts.
+- **[Users & delegated access](/whp/admin/user-management/)** — create sub-users, delegate panel access, manage SFTP/SSH users.
+
+## Things to know before you change server-wide settings
+
+- **One change can affect every site on the server.** Where customer-side pages scope changes to one site, admin pages typically scope to the whole server.
+- **Service restarts are visible to live traffic.** Restart Apache or PHP-FPM during a quiet window when possible.
+- **Backups still apply.** Server-level changes don't bypass the [backups](/whp/how-to/backups/) you have configured; you can roll back the data side, but service-config changes you made by hand aren't snapshotted unless you back up `/etc` somewhere on your own.
+
+## Related
+
+- [What is containerized hosting?](/whp/getting-started/what-is-containerized-hosting/) — the differences between container plans and full server access.
+
+## Still stuck?
+
+<Support />