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/Power.tsx

@@ -20,7 +20,10 @@ export default function Power({ host, label, rebootNeeded }: { host: string; lab
 
   return (
     <>
-      <button className={'icon-btn power' + (rebootNeeded ? ' attn' : '')} title={rebootNeeded ? 'reboot required' : 'power'} onClick={() => { setOpen(true); setTyped(''); setSent(''); setErr('') }}>⏻</button>
+      <button className={'icon-btn power' + (rebootNeeded ? ' attn' : '')} title={rebootNeeded ? 'reboot required' : 'power'} onClick={() => { setOpen(true); setTyped(''); setSent(''); setErr('') }}>
+        {/* drawn, not typed: ⏻ (U+23FB) is missing from Windows' fonts and shows as a box of hex digits */}
+        <svg viewBox="0 0 16 16" width="15" height="15" fill="none" stroke="currentColor" strokeWidth="1.6" strokeLinecap="round" aria-hidden="true"><path d="M8 1.8v6" /><path d="M4.6 4.2a5.2 5.2 0 1 0 6.8 0" /></svg>
+      </button>
       {open && (
         <div className="modal-back" onClick={() => !sent && setOpen(false)}>
           <div className="modal" onClick={(e) => e.stopPropagation()}>