Top wears the skin; the refresh rate reaches every machine; bug bash 4

The process table's columns fit the box they are in, the rate control saves, curves are
timed on the viewer's clock and keep to the stride, the power icon is drawn, and a young
history draws in from the right instead of being stretched.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/src/Updates.tsx

@@ -66,7 +66,7 @@ export default function Updates() {
       {st.manager && !st.sudo && <div className="notice">Read-only: refreshing and upgrading need root. Run Ham Lab as root, or give its user passwordless sudo or doas.</div>}
       {st.reboot_needed && (
         <div className="notice attn">
-          <b>Reboot required</b>{st.reboot_pkgs.length > 0 && <> · {st.reboot_pkgs.join(', ')}</>} — use the ⏻ button in the header.
+          <b>Reboot required</b>{st.reboot_pkgs.length > 0 && <> · {st.reboot_pkgs.join(', ')}</>} — use the power button in the header.
         </div>
       )}
       {err && <div className="error">{err}</div>}