Fix Control view button layout and responsiveness

The scan/record button row used justify-between, spreading the two
button groups to opposite ends instead of sitting next to each other.
Also made the record-controls row and each device card's header wrap
instead of overflowing on narrow screens.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzyfRyA7h5rs5SCAahLAWd

components/control/RecordControls.tsx

@@ -15,7 +15,7 @@ interface RecordControlsProps {
 export function RecordControls({ active, elapsedLabel, disabled, busy, onStart, onEnd }: RecordControlsProps) {
   if (active) {
     return (
-      <div className="flex items-center gap-3">
+      <div className="flex flex-wrap items-center gap-3">
         <span className="flex items-center gap-2 text-sm font-medium">
           <Circle className="bp-pulse size-2.5 fill-destructive text-destructive" />
           Session live · {elapsedLabel}