refactor: move content under data/ for Git Sync compatibility

Git Sync expects folders: pages/themes/plugins/config/data
Content now at data/content/{fqdn}/pages/

Assisted-by: GLM-5 via Crush <crush@charm.land>

data/content/plan.knownelement.com/ThingsToDocument.md

@@ -0,0 +1,27 @@
+
+- [Things to document](#things-to-document)
+  - [System Admin](#system-admin)
+    - [Facilities](#facilities)
+    - [Network](#network)
+    - [Hypervisor](#hypervisor)
+    - [Storage](#storage)
+    - [Authentication](#authentication)
+  - [SRE](#sre)
+
+# Things to document
+
+## System Admin
+
+### Facilities
+
+### Network
+
+  VPN user addition to algo (opnsense soon)
+
+### Hypervisor
+
+### Storage
+
+### Authentication
+
+## SRE