Align sized cluster seeds and GET dumps with PVE wire shapes; restyle DATA panel.

- Scale small/large/big seeds (3×50 / 10×1000 / 20×2000) with proportional
  backups, snapshots, HA, replication, Ceph capacity, and OSD totals
  (10 / 100 / 500) plus matching node disks and crush/pg metadata
- Enrich handler responses for apt, certificates, qemu/lxc status, storage,
  SDN, metrics export, and related cluster/node dumps
- Flatten nested body_example fields into PARAMS and sync the request body
  via dotted paths (oVirt-style)
- Restyle DATA controls as size cards with full-width Reset to minimal /
  Refresh stats; unload reloads the minimal cluster

docs/getting-started.md

@@ -150,8 +150,8 @@ curl -sS -H "Cookie: PVEAuthCookie=$TICKET" \
 
 Visit [http://localhost:8006/](http://localhost:8006/) for the interactive
 console, contract catalog (PVE 6–9), compatibility view, runtime contract apply,
-and demo-cluster controls. See [Web UI](web-ui.md) for light/dark theme
-screenshots and the full feature list.
+and demo-cluster controls. See [Web UI](web-ui.md) for screenshots and the
+full feature list.
 
 ## 8. Try a client library