v0.90.0: ExpandableRow graduation, a ListToolbar menu facet, formatPhone

0.90.0

Added

• ExpandableRow graduates into the admin-toolkit subpath (second consumer landed:
  aksailingclub-org's own src/admin-club/toolkit/ExpandableRow.svelte), carrying three visual
  fixes from the Members-refinement audit: the summary row's hover wash now reaches the sticky
  trigger cell with its own opaque tint (a transparent-based wash would let content scrolling
  underneath a pinned column show through); the trigger cell follows zebra parity
  (base-200 on striped rows) instead of a hardcoded base-100, closing the right-edge seam;
  and the expanded panel's <td> gets background: var(--color-base-300) with an inset
  top-border, so the drawer reads as its own surface instead of merging with the zebra stripe.
  All of the component's contracts (colspan mechanics, the 390 column-hiding pattern,
  aria-expanded/keyboard behavior) are unchanged.
• ListToolbar gains a display: 'menu' filter variant: a quiet bordered button showing the
  facet's name at rest ("Standing") and its applied value in-control ("Standing: Overdue") with
  a separate inline clear affordance, opening a keyboard-operable option list (focus moves to
  the first option on open, Escape and outside-pointerdown close it, only one facet stays open
  at a time). The existing 'select' variant is unchanged behaviorally and now shares the same
  30px control height and 13px text as every other control in the row.
• formatPhone(phone: string): string joins the admin-toolkit formatters: a stored E.164 NANP
  number (+19075550100) renders as the hyphenated 907-555-0100 for a table cell; anything
  outside that shape passes through unchanged.

Changed

• ListToolbar's controls row recomposes from a rigid repeat(auto-fill, minmax(11rem, 1fr))
  grid to a wrapped flex row (search flex: 1 1 240px), so five promoted facets plus search fit
  one line at a realistic container width and wrap cleanly at narrow widths instead of forcing
  ragged per-cell wrapping. The applied-pills row is retired; computeAppliedFilters now only
  feeds the count line. The 13px count line gains tabular-nums, as does Pagination's range
  line.
• StatusChip's border demotes from badge-outline's full-strength currentColor (which read
  as a clickable button) to color-mix(in oklab, currentColor 35%, transparent), the value
  verified against zebra stripes in both themes; the sm size keeps its 5rem min-width floor.
• OfficeList's header stack (eyebrow/title/subtitle) no longer leaks the browser's default
  h1/p margins past its own gap-0.5 (flex does not collapse child margins), so the
  rendered gaps settle to the intended few px instead of a ~32px leak; the header's action slot
  no longer stretches full-width below the sm breakpoint.
• cairn's own ConceptList create-button label now resolves its singular noun through the same
  itemNoun grammar Pagination and ListToolbar use, instead of a bespoke fallback, so a
  concept that only declares a plural label (the showcase's pages, before this change) no
  longer reads "New Pages" where "New Page" was intended.

No consumer action is required. ExpandableRow and formatPhone are new, additive exports;
ListToolbar's 'menu' display value widens an existing string union; every other change is a
visual refinement inside cairn's own admin-toolkit and built-in admin screens.