The button was a placeholder that submitted to a no-op server action,
so clicking did nothing. Replace with a small client component that:
1. Calls syncGroupsAction(accountId) to pgNotify the bot.
2. Listens for the bot's groups.synced event over SSE and
router.refresh()es when it arrives so the new rows appear without
a manual reload.
3. Disables the button + shows a Syncing… label while the sync is
in flight, with a 15s safety timeout if the bot or SSE channel
drops so the spinner doesn't strand.
Drop the in-place <form action={async() => 'use server'}> placeholder.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>