PeriodTabs (reviewer 488fb32 concern):
- Drop role=tablist/tab/aria-selected. These imply a full ARIA tab
pattern (tabpanel, aria-controls, roving tabIndex, internal Arrow
focus traversal) which we don't implement — page-level left/right keys
drive period change instead. Switch to plain button group with
aria-pressed={active}, which accurately describes a segmented
toggle. Comment updated to match.
OrderbookPanel sticky (new slice):
- Add optional sticky prop. When true, panel uses 'sticky top-4' with
a slightly heavier bg-zinc-900/80 + backdrop-blur so it stays
legible over the panels scrolling behind it.
- page.tsx passes sticky={isIntraday} — only 1D (10m bars) mode
benefits, since orderbook timeliness drops on daily+ charts and the
fixed slot would harm sidebar layout stability there.
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