ZFS tab: show a mover's rsync limit only when there is one, in the units rsync means (60M = 60 MiB/s)

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

web/src/ZFS.tsx

@@ -381,6 +381,13 @@ const wIds = (w: ZFSWrites) => ['zfs.write.dirty', ...w.pools.flatMap((p) => {
   return [b + 'write_bps', b + 'logical_bps', ...(p.landing ? [b + 'landing.pending_bytes', b + 'landing.in_bps', b + 'landing.drain_bps'] : [])]
 })]
 
+// rsync's --bwlimit: a bare number is KiB/s, a K/M/G suffix is binary (60M = 60 MiB/s); 0 is none
+const bwl = (v: string) => {
+  const m = /^(\d+(?:\.\d+)?)([KMG]?)$/i.exec((v ?? '').trim())
+  if (!m || Number(m[1]) === 0) return ''
+  return ` · rsync limited to ${m[1]} ${(m[2] || 'K').toUpperCase()}iB/s`
+}
+
 function MoverLine({ l }: { l: Landing }) {
   const m = l.mover
   if (!m) return <div className="notice" style={{ marginTop: 6 }}>No mover is reporting for this landing tier (nothing in <span className="mono">/run/landing-mover/</span>). Files that land here stay here until something moves them.</div>
@@ -396,7 +403,7 @@ function MoverLine({ l }: { l: Landing }) {
         {m.state === 'moving' && m.current && <div><span className="k">Now</span><span className="mono small" title={m.current}>{m.current}{m.current_size ? ` · ${fmtBytes(m.partial)} of ${fmtBytes(m.current_size)}` : ''}</span></div>}
         <div><span className="k">Since start</span><span>{fmtN(m.moved_files)} files · {fmtBytes(m.moved_bytes)} moved · running {ago(m.started_ms).replace(' ago', '')}</span></div>
         {m.last_move && <div><span className="k">Last moved</span><span className="mono small" title={m.last_move}>{m.last_move} · {ago(m.last_move_ms)}</span></div>}
-        <div><span className="k">Rules</span><span className="muted">a file moves once it has been closed and left alone for {m.settle} s · limit {m.bwlimit && m.bwlimit !== '0' ? `${m.bwlimit}B/s` : 'none'} · oldest first</span></div>
+        <div><span className="k">Rules</span><span className="muted">a file moves once it has been closed and left alone for {m.settle} s · oldest first{bwl(m.bwlimit)}</span></div>
         {m.last_error && <div><span className="k">Last error</span><span className="warn-text" style={{ whiteSpace: 'normal' }}>{m.last_error} · {ago(m.last_error_ms)}</span></div>}
       </div>
       {m.state === 'moving' && m.current_size > 0 && <Meter frac={frac} cls="" />}