fix: quiet sparks instead of dashed rings around the automation panel

The pulsing dashed rings around the example workflow read as a second,
broken frame. The panel now sheds a few digits at its left edge like the
other frames on light backgrounds, and the ring motion, which nothing else
used, is removed from BitAura.

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

apps/web/src/components/illustrations/AutomationFlow.tsx

@@ -252,7 +252,7 @@ export const AutomationFlow: React.FC = () => {
         {flow.summary}
       </p>
 
-      <BitAura source="around" tone="light" motion="pulse" className="mt-8">
+      <BitAura source="left" tone="light" className="mt-8">
         <div className="overflow-hidden rounded-3xl bg-slate-900">
           <div className="flex items-center justify-between border-b border-slate-800 px-5 py-4 md:px-7">
             <span className={`${MONO} text-slate-400`}>{flow.name}</span>