Match the Technitium canvas: palette, shell, KPI strips, framed tables

The live UI did not follow the canvas because its base layer differed: dark
palette in hex (now the canvas oklch values), 13 px body text, flat Frame panels.

- Tokens: canvas palette, 14 px body, 1.4 line height; Frame without `dense`
  gets the 3 px ring; Panel takes a description line.
- Shell: 56 px brand button with version, 11 px group headings, user card at the
  foot, versions moved into the header status popover, Home / group / section
  crumbs, amber "Attention" status when blocking is off or paused.
- New KpiStrip and PageTabs; Dashboard KPIs in three frames and a Refresh button.
- Zones: KPI strip, tab with count, views, framed table with the canvas columns.
- Apps: Installed / App Store tabs and a grid instead of cards (store inline).
- Blocking: state banner and tab counts; one "Blocking" title.
- Settings: actions in the header, label-and-help rows with the control on the right.
- DHCP, Administration, DNS Client, Logs, Cache, About: subtitles, framed tables,
  KPI strips where the data exists; Login cover with the three-point list.
- docs/compose.shnt.example.yaml: production compose with the console image.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/screens/Login.module.css

@@ -27,7 +27,8 @@ above it below. The form's side keeps what it always had: the card centred on
 }
 .card {
   composes: panel from '../ui/Panel.module.css';
-  width: 340px;
+  width: 420px;
+  max-width: 100%;
   padding: var(--s-11) var(--s-11);
 }
 /*