Add tooltipTimestampFormat to TimeseriesChart for formatting standard and marker tooltip timestamps in a consumer-selected time zone.

Add Base UI-style composable Popover parts while preserving the legacy Popover.Content API.

Allow LayerDialog actions to use a ButtonGroup split button for related alternate submit outcomes.

Keep Popover arrows visible when content clips or scrolls by using a compatibility-safe opacity transition.

Match a linkable Badge's focus outline to its pill shape.

Stop logging runtime warnings for deprecated Text heading variants. The variants remain marked as deprecated in the TypeScript API.

Preserve ButtonGroup's outer corners while an overlay control is open.

Update the bundled Base UI dependency to version 1.8.0 and expose its Combobox item collection and functional Toast update APIs.

Add ButtonGroup component for joining a small set of tightly-coupled buttons into a single control — most commonly a split button (a primary action next to a dropdown trigger). Handles layout only: children keep their own variant, size, and shape while the group flattens inner corners and overlaps borders so the buttons share one seam. Renders role="group". For grouping multiple independent buttons or inputs, use Toolbar instead.

Add sidebar open-change completion callbacks.

Add the TagInput component for creating and removing free-form values.

Add InlineCopyText, a compact borderless copy control for short values in dense interfaces and table cells. It accepts string or rich children, Text typography props excluding heading variants, an explicit copied value for rich content, localized accessible labels, inline success feedback, and hover or focus icon reveal.

Add an optional yAxisMinInterval prop to TimeseriesChart for discrete data.

Add support for footer text below TimeseriesChart tooltip values.

Add a strict responsive LayerDialog component with automatic dismissal composition, alert-dialog semantics, mobile drawer behavior, and application-wide defaults for its built-in close and cancel copy through KumoLocaleProvider.

Add GlobeMap, an SVG orthographic globe with boundary-free hatched land, horizon-faded geographic markers, optional geographic guides, pointer and keyboard rotation, automatic rotation, Kumo-themed tooltips, and no WebGL or ECharts requirement.

Reset the native fieldset padding in radio and checkbox groups.

Refine Empty state typography and balance description text when it wraps.

Support nested LayerDialog drawers with independently layered backdrops and responsive mobile actions.

Add a plain CodeHighlighted variant for frameless, padding-free code blocks with a correctly positioned copy button.

Document app-root CSS isolation for reliable stacking of portaled components.

Update formatting for Vite+ 0.3.1.

Use the up/down double chevron in Combobox value and input triggers to match Select.

Add a visual regression contract for truncating text in default Tooltip triggers.

Add scrollItemIntoView() to preserve the position of visible sidebar items while honoring alignment for offscreen items.

Allow default Tooltip trigger children to control their line height, preventing inherited text from being clipped.

Add unknown-total pagination support through hasNextPage.

Add Toolbar.Link, which renders a LinkButton with toolbar sizing, styling, and keyboard navigation.

Position dialogs near the top of the viewport instead of vertically centering them.

Use the elevated surface color for even rows in the default Table variant.

fix(select): align the trigger surface with form controls

Select triggers now use bg-kumo-control, including their open and disabled states, so they match Input, Combobox, and the rest of the form-control family. Consumer background classes can still override the default without using !important. The popup remains on the floating bg-kumo-base surface.

fix(select): anchor the popup below the trigger and expose placement props

Select.Positioner relied on Base UI's alignItemWithTrigger default (true), which overlays the popup on the trigger so the selected option's text lands on the trigger's value text, emulating a native <select>. Options always render at text-base, so on xs/sm triggers the popup was much taller than its anchor, and Base UI's compensating shift detached it from the trigger — on xs it overhung by 12.5px above and 45.5px below and sat 8px to the left, covering adjacent content.

The popup now prefers bottom placement and is offset from the trigger, with Base UI's collision avoidance still flipping it automatically when the preferred side lacks space. Placement is configurable:

The remaining Base UI Positioner controls are also forwarded unchanged: anchor, arrowPadding, positionMethod, collisionAvoidance, collisionBoundary, collisionPadding, sticky, and disableAnchorTracking.

The popup also now tracks the trigger width via min-w-(--anchor-width) instead of min-w-[calc(var(--anchor-width)+3px)], which existed to visually offset the old item-alignment shift.

Allow non-heading Text variants to inherit line height from their surrounding context.

Make Combobox.Input sit flush with the top and sides of Combobox.Content and remove its bottom corner rounding.

Reduce the trailing inset for buttons inside large InputGroup addons.

Add the Text heading variant with a 16px semibold default and a 20px size="lg" option. The variant defaults to a span, so callers choose heading semantics explicitly with as. Deprecate the numbered heading1, heading2, and heading3 variants.

Collapsible.DefaultTrigger now uses text-kumo-default (neutral) with font-medium instead of the blue text-kumo-link color.

deprecate MenuBar in favor of segmented Tabs

• mark the MenuBar component (and its exports) as @deprecated; it will be removed in a future release
• new usage should prefer Tabs with variant="segmented" (the default Tabs variant)
• the runtime behaviour of MenuBar is unchanged for existing consumers
• remove the MenuBar documentation page and demos from the docs site

Fix Toast background clipping the ring outline at the corners — the inner background layer's radius (11px) was smaller than the root's rounded-xl (12px), painting over the ring at the corners. Matched them up.

Restore disabled and loading state handling for Toolbar.Button so disabled controls expose the correct semantics and cannot be activated.

Normalize shadows and outlines on tip-style overlays (Popover, Tooltip, ClipboardText, Chart tooltip).

• Drop the shadow-kumo-tip-shadow color override so shadows use Tailwind's default translucent black instead of an opaque light-gray in light mode.
• Tune shadow sizes: Popover, Tooltip, ClipboardText tooltip, and Chart tooltip use shadow-md; ClipboardText's "Copied" toast keeps shadow-lg to match the Toast component.
• Switch these overlays from outline-kumo-fill to outline-kumo-line, matching every other floating surface (Dropdown, Select, Combobox, Dialog, etc.).
• Rename kumo-tip-shadow → kumo-arrow-edge and kumo-tip-stroke → kumo-arrow-stroke. The tokens draw the border on Popover/Tooltip arrow SVGs, not a box shadow. Both now resolve to kumo-line, so the arrow border aligns with the popup outline in both modes.

Add scrollToItem(id, options?) to useSidebar() for imperatively scrolling a nav item into the sidebar viewport. Tag items with the new itemId prop on Sidebar.MenuButton or Sidebar.MenuItem.

Options:

• align: "start" | "center" | "end" | "auto" (default "auto" — no-op if the item is already visible; otherwise scroll the minimum distance).
• behavior: "auto" | "smooth" (default "auto" — instant, best for cross-app landings so users don't watch the sidebar animate on entry). prefers-reduced-motion forces "auto".

Scrolls only the sidebar viewport (never the document) and works with Sidebar.SlidingViews: items register with the provider via an internal map, so scrollToItem walks up from the target to find its owning viewport rather than querying the DOM.

Add icon support to filled Badge variants through the icon prop, add linked-badge hover styles, and use the base surface background for outline badges.

Allow users to select and copy LinkButton text while preserving Button text selection behavior.

Update Table rows to use borderless, alternating background styling.

Fix hydration mismatch in the Sidebar's useIsMobile hook on SSR frameworks like Next.js. The hook now uses useSyncExternalStore with a desktop getServerSnapshot, so the server-rendered HTML (desktop <aside>) hydrates cleanly on mobile viewports before switching to the mobile overlay.

Allow Select and Combobox triggers to compose directly with Toolbar.Button and Toolbar.Input through their render props, adding grouped styling and arrow-key focus management while preserving regular Select.* and Combobox.* APIs.

Deprecate Toolbar's configurable size prop and size metadata exports. They remain functional for compatibility; omitting size continues to use the base size.

Forward link-specific props in Tabs and Sidebar so link-rendered tabs can opt out of native button semantics, and Sidebar link buttons preserve attributes like aria-current.

Expose all positioner props on Combobox.Content (anchor, positionMethod, collisionAvoidance, collisionBoundary, collisionPadding, sticky, disableAnchorTracking).

Populate InputArea props in component registry so the docs API reference table renders correctly

Fix Sidebar peeking state during SlidingViews transitions.

Fix Tabs overflow controls when tabs are removed and the remaining tabs fit.

Remove the elevated chip styling from Tabs overflow scroll controls.

Constrain Tabs overflow controls to segmented tabs and focus the caret target.

Update the default collapsible trigger and panel styling.

Collapsible.DefaultPanel now uses an inner content wrapper so the outer panel can animate height smoothly while clipping overflow during the transition. Consumers applying custom layout or spacing classes directly to DefaultPanel may need to move those styles to their content, or use Collapsible.Panel for a fully custom layout.

Fix initCatalog so it actually loads the validation schemas.

Previously it triggered a synchronous validation whose "schemas not loaded" error was swallowed, so await initCatalog(catalog) could resolve while hasComponent, componentNames, and the other synchronous catalog APIs still reported no components. It now awaits loadSchemas() directly.

A failed schema load is also no longer cached: retrying initCatalog (or loadSchemas) after a transient failure now re-attempts the import instead of returning the stale rejection.

Fix Shiki highlighter lifecycle in ShikiProvider and CodeHighlighted.

ShikiProvider no longer re-creates the highlighter when a parent rerender passes an equivalent inline languages array — initialization is keyed on the normalized language set. Highlighters are now disposed on unmount and when the engine or language set changes, instead of leaking. CodeHighlighted memoizes the highlighted HTML so unrelated rerenders (such as copy-button state changes) no longer re-highlight unchanged code, and initialization errors are logged once instead of on every render. Reinitializing after a failed initialization now clears the stale error state instead of showing it during the retry.

Reset the Tabs overflow control background so host button styles do not show through the scrim gradient.