{# Row action menu (§3.4 of UI/UX redesign spec). Caller passes: `sym` — ticker (str) `qty` — quantity (Decimal | str) `account` — account label (str) `account_id` — account id (int | None) — passed through to the side pane so the set-basis form can scope to a single lot The button is hover-revealed via the `.row-actions` CSS utility on the parent . Phase 4 wires the keyboard shortcuts (Enter / S / B / C); the `aria-keyshortcuts` advertise the future binding now. #}