refactor(admin): drop status strip from dashboard; full-bleed usage tab

- admin home is tournament section + tools list only
- usage route matches sibling tabs (fullWidth, no shell padding); screen
  pads its own content so the tab bar stays flush

src/features/telemetry/components/usage-screen.tsx

@@ -255,7 +255,7 @@ export const UsageScreen = () => {
   const range = useMemo(() => lastNDays(Number(rangeDays)), [rangeDays]);
 
   return (
-    <Stack gap="md">
+    <Stack gap="md" px="md" pb="md">
       <SegmentedControl
         value={rangeDays}
         onChange={(value) => setRangeDays(value as "7" | "30")}