fix(design): the saved-view chip on one line, one Escape per layer, the /watch action row (E28 S3d)

- SelectTrigger lays its toolbar value out as a row; the saved-view chip passes its glyph and
  modified dot through the icon/trailing slots (an <svg> is display:block and broke the chip in two).
- One Escape in a dialog's open list closed the list AND the dialog: the list's close flushes
  synchronously and pops its layer before the dialog's window listener runs. takeEscape() is the one
  close-on-Escape test (topmost AND not yet taken); Modal, the Welcome lightbox and useLayer use it,
  and keymap.dispatch ignores a taken Escape.
- /watch: the Download sits on the toolbar rung, level with the Repeat chip.

frontend/src/components/SavedViewsPopover.tsx

@@ -14,12 +14,17 @@ import { SelectTrigger } from "./ui/SelectTrigger";
 export default function SavedViewsPopover({
   trigger,
   toolbar = false,
+  icon,
+  trailing,
   ariaLabel,
   placement = "bottom-start",
 }: {
   trigger: ReactNode;
   /** The toolbar's view chip: the A5 dropdown trigger around `trigger`, instead of a glyph. */
   toolbar?: boolean;
+  /** Toolbar only: the trigger's leading glyph and its after-the-value mark, in their own slots. */
+  icon?: ReactNode;
+  trailing?: ReactNode;
   ariaLabel?: string;
   placement?: "bottom-start" | "bottom-end";
 }) {
@@ -34,6 +39,8 @@ export default function SavedViewsPopover({
         <SelectTrigger
           context="toolbar"
           open={open}
+          icon={icon}
+          trailing={trailing}
           ref={pop.refs.setReference}
           {...pop.getReferenceProps()}
           aria-label={label}