# @xds/core # 0.6.1 #### New Features - Remove the prefix requirement from theme-local tokens (#6285) - Add ScrollableArea and useScrollableArea for accessible, logical-axis native scrolling with explicit overscroll policy. (#6262) Scrollable viewports now become keyboard reachable only while content effectively overflows, preserve logical edge state across writing modes, apply contained overscroll only on active axes, avoid capturing Sticky while fitting unless explicitly requested, expose standard container sizing props, and integrate optional content padding plus opt-in full bleed with the shared container geometry system. #### Fixes - BaseTypeahead: preserve input props and keep results accessible in narrow layouts (#6179) BaseTypeahead now forwards its inherited DOM and styling props to the combobox input, preserves native input attributes unless a defined legacy alias overrides them, keeps empty result lists valid for assistive technology, counts visible characters for `minQueryLength`, and keeps both the popup and long result content within viewport gutters. - BottomSheetSwitcher: let the topmost nested layer handle Escape before a non-modal flow. (#6184) - BreadcrumbItem preserves valid outside focus on menu light dismiss and labels menus from rich trigger content (#6206) - Center: preserve component-owned axis reflection and correct the horizontal-centering example. (#6207) - Localize Chart accessibility text and complete its consumer guidance. (#6247) - defer clear focus restoration for pointer/touch taps to prevent page scroll jumps while preserving synchronous focus restoration on keyboard activation and properly composing `onPointerDown` in `InputClearButton` (#5440) - Prefer canonical component target names in maintained themes and new examples while preserving deprecated runtime aliases and released bare prop/state selector classes through the 0.7.0 removal window. Theme discovery labels deprecated targets, theme build warns with each exact canonical replacement, and `astryx upgrade --apply` provides the forward-compatible bare-selector migration. (#6126) - Field inputs no longer paint above the sticky AppShell header while scrolling (#5689). Field now contains its local stacking layers (the input surface's z-index and the attached status layer) behind an `isolation: isolate` boundary on the field surface, so they cannot compete with page-level stacking; the AppShell header keeps its normal stacking level. - TextInput's `onEnter` no longer fires for the Enter that commits an IME conversion (Japanese/Chinese/Korean input); `onKeyDown` still receives the raw event. (#6082) #### Documentation - AspectRatio: show the `ratio` prop in its JSX form (#6093) The best-practice line told readers to express the ratio as a fraction like `16/9` without showing it in JSX, and nothing else in the CLI output gives `ratio` an example. Rewrites it to `ratio={16 / 9}` and names the string form as a type error. #### Contributors Thanks to everyone who contributed to this release: - @cixzhang - @Cypher-Aura-19 - @Geervan - @Kyujenius - @ManoharPaturi --- # 0.6.0 #### Breaking Changes - Remove deprecated focus-direction overrides, the hooks-path `isImeKeyEvent` re-export, and Resizable pixel-bound aliases. **Codemod:** Run `npx astryx upgrade --apply` before updating to 0.6.0. It removes focus-hook `isRtl`, moves `isImeKeyEvent` imports to `@astryxdesign/core/utils`, and renames `minSizePx`/`maxSizePx` to `minSize`/`maxSize`. - Stop emitting deprecated bare prop and state classes such as `.primary`, `.sm`, and `.checked`. Components retain their stable `astryx-*` target classes and reflect visual props and runtime states through explicit `data-*` attributes; generated runtime and built theme CSS now uses that same selector contract. Run `astryx upgrade --apply` to migrate safely identifiable selectors in `.css` files when a known Astryx target and v0.5.4 value have one or more known meanings. For example: - `.astryx-button.primary` → `.astryx-button:is(.primary, [data-variant="primary"])` - `.astryx-button.sm` → `.astryx-button:is(.sm, [data-size="sm"])` - `.astryx-switch.checked` → `.astryx-switch:is(.checked, [data-checked="checked"])` The codemod parses CSS selector syntax and never rewrites declarations, comments, JavaScript/TypeScript strings, unqualified classes, or custom/unknown qualified classes. Each known value becomes a specificity-preserving `:is(...)` union containing the original class arm plus every v0.5.4 reflected data-attribute arm. The class arm keeps consumer-supplied `className` matches working; the attribute arms match v0.6 props and states. You can narrow the union later when class provenance or prop-axis intent is known. Search for unqualified old value selectors such as `.primary` or `.sm` and migrate those manually only where Astryx usage is confirmed. Migrate selectors embedded in JavaScript or TypeScript manually with the same rules. Semantic `defineTheme({components})` keys such as `variant:primary` and `checked` do not change. If you prebuild a custom theme, rerun `astryx theme build ` after upgrading and deploy the regenerated `.css`, `.js`, `.d.ts`, and optional `.variants.d.ts` artifacts together. A built theme is marked `__built: true`, so the runtime intentionally does not regenerate stale CSS. Exported theme helpers keep their return/container shapes but intentionally return different selector bytes: - `themeProps` returns the stable target class (plus target-name compatibility aliases), without bare prop/state classes; its reflected `data-*` attributes are unchanged. - `parseStyleKey` returns data-attribute selector suffixes instead of `.value`, `.prop-N`, or `.state` suffixes. - `generateThemeRules` keeps its array contract and ordering; non-base component selectors use reflected attributes. - `generateThemeRulesSplit` keeps `{component, prose}`; `component` selector bytes change and `prose` is unchanged. - `generateOnMediaCSS` keeps its scoped string contract; component selector bytes change. - `generateThemeCSS` keeps `{prose, component}` and the same layers/scopes; `component` inherits the new selectors and `prose` is unchanged. - Restrict `Stepper`'s `horizontalOptions.minimumStepWidth` to a pixel number and remove compact-layout implementation fields from `useStepperContext`. Replace CSS-length thresholds such as `'7rem'` with their intended pixel number. Call `registerStep(index, {getIsDisabled})` instead of passing a disabled boolean; the options object is optional. `StepperContextValue` keeps transition history and step registration, while step count, compact state, summary-portal coordination, and threshold measurement remain package-internal. - Add ordered environmental adaptations to `defineTheme` Themes can now opt into CSS-first token, theme-local token, and component changes for named viewport widths, primary-pointer precision, contrast preference, and motion preference: ```ts defineTheme({ name: 'acme', adaptations: { widthBreakpoints: {sm: 640, md: 768, lg: 1024, xl: 1280, '2xl': 1536}, rules: [ { when: {width: {from: 'lg', below: 'xl'}, pointer: 'coarse'}, value: {tokens: {'--size-element-md': '44px'}}, }, ], }, }); ``` Condition fields are ANDed. `width.from` is inclusive, `width.below` is exclusive, and rules cascade in declaration order so later matching writes win. Theme extension preserves the effective breakpoint map and inherited rule order; static builds retain the metadata needed for source-equivalent extension. `AppShell` now accepts `xl` and `2xl` for `mobileNav.breakpoint` and resolves all five names through the nearest Theme. Mobile mode now uses the documented exclusive boundary (`width < breakpoint`), so an AppShell exactly at the named point renders the wider layout instead of the mobile layout. `defineTheme` now validates the token values authored inside an adaptation rule, rejecting non-string scalars and arrays with a length other than two instead of emitting them. Root and on-media token input keeps its existing acceptance unchanged, so themes that pass values through casts or spreads keep building. It also validates the combined portable and theme-local token graph for every reachable set of matching adaptation rules, rejecting cycles before CSS is emitted. Component writes in a rule use the same target, axis, value-domain, and extension validation as root `components`; a rule may not be the only place a custom value is enrolled, because generated type augmentation is unconditional. `astryx theme build` treats the adaptation generator as a core capability rather than a baseline requirement, so a theme with no adaptation intent still builds against an older installed `@astryxdesign/core` and emits the same CSS as before. A theme that does carry adaptation intent — valid rules, a custom `widthBreakpoints` map, or present-but-malformed adaptation metadata — fails against such a core before any output is written, with `ERR_CORE_INCOMPATIBLE` naming the missing `generateAdaptationCSS` export. A complete default width map with no rules asks for nothing and still builds. Where an older core's `defineTheme` drops adaptations while resolving, the build records each raw `defineTheme()` input and associates it with the theme it produced, so only the selected theme's lineage decides. An unobservable selected ancestor (including a CommonJS source package whose ESM core namespace cannot be wrapped) fails closed; an unused adaptive theme elsewhere in the import graph does not affect a plain build. The same capture preserves raw typography, color, radius, and motion axis metadata in old-core-built artifacts, allowing later current-core children to resolve partial adaptation axes exactly as if they extended the source theme. #### New Features - Banner exposes a `banner-frame` theme target on the visible frame that owns whole-banner elevation and the elevated-card silhouette. The target reflects `container` and `elevation`; existing Banner targets and default rendering are unchanged. - `Collapsible` and `CollapsibleGroup` accept `chevronPosition="start" | "end"`. The default remains `end`, preserving the released trailing chevron. `start` moves the disclosure arrow ahead of the label for tree/file-browser-style rows: it points inward toward content when collapsed, mirrors under RTL, and turns downward when expanded. Set the position on `CollapsibleGroup` when direct items should share it. An individual `Collapsible` may override the group, while a Collapsible nested inside an item's content starts a new presentation scope and keeps its own default. - Add a named font-weight override to Heading with precedence over its visual type and semantic-level defaults. - Add an `autoComplete` prop to TextInput and TextArea, forwarded to the native control unchanged. #### Fixes - ChatComposerInput: drop `aria-multiline` once triggers make the editable a combobox `aria-multiline` was hardcoded on the contenteditable element while `useTriggerMenu` owns its role, so configuring `triggers` switched the role to `combobox` — which ARIA 1.2 does not list `aria-multiline` under — and axe flagged `aria-allowed-attr` (critical) on the 8 ChatComposerInput trigger stories and the 2 ChatLayout stories that render one. Moves the attribute into the hook's `ariaProps`, where the role and the attributes whose validity depends on it are decided together. - CheckboxListItem: the visible `description` is now the checkbox's accessible description, so the browser computes a distinct description instead of none. Item ids the description element it already renders and publishes that id to the content it renders in a slot, which keeps a plain string description's automatic single-line truncation. CheckboxInput now merges a consumer-supplied `aria-describedby` with its own description, status, and disabled-reason ids rather than replacing it. No public API changes. - CheckboxListItem: a ReactNode `label` now names the checkbox from its visible text through `aria-labelledby`, the way RadioListItem already does, instead of falling back to the generic name "Checkbox". `aria-label` still replaces that name; a rich label with no text at all needs it, as it does for RadioListItem. The dev-time warning that asked for `aria-label` on every rich label is gone. - Prevented removed Resizable bounds from being silently ignored and kept ambiguous spread migrations behavior-preserving (#6124) - Keep hover from auto-scrolling open option lists (#6077) In a scrollable listbox whose highlight follows the pointer, scrolling the highlighted option into view moved the next option under the stationary pointer, whose mouseenter re-highlighted and scrolled again — an endless loop with no user input. This was already fixed for DropdownMenu and Chat; it now covers the remaining combobox-style paths through a shared highlight owner: Selector, MultiSelector, Typeahead, DateTimeInput, and CommandPalette hover highlights move only the highlight, while keyboard navigation still scrolls the highlighted option into view. - Slider keeps its focus ring hidden for modifier-only key presses after a pointer drag while preserving keyboard navigation (#5469) - Layout: keep content scrollbars at the content area's outer edge when `contentWidth` is set. Without panels, `LayoutContent` spans the available Layout width and aligns its children to `contentWidth` internally. With exactly one panel, the panel stays aligned to the `contentWidth` frame while content extends across the opposite open area. A two-panel layout keeps the complete composition constrained. - Popover: apply same-gesture reopen protection through every opening path, focus genuine caller content regardless of activation modality, and keep the generated fallback close control hidden until keyboard users reach it. - SideNavItem: a consumer-provided `aria-label` no longer gets overwritten by the collapsed-rail fallback, in both the icon-only and popover-trigger paths. #### Contributors Thanks to everyone who contributed to this release: - @cixzhang - @ernestt - @faga295 - @freddymeta - @HelloOjasMutreja - @imdreamrunner - @jiunshinn - @kentonquatman - @Kyujenius - @rubyycheung --- # 0.5.4 #### Fixes - DropdownMenu: keep focus where it is when a controlled menu mounts already open (#5976) Mounting with `isMenuOpen` true no longer moves focus into the first item; only an open that happens after mount does, per the input-modality rules. A page that renders a menu open on load no longer drops keyboard users into it, and ArrowDown on the focused trigger walks into an already-open menu instead of requiring a close and reopen. - DropdownMenuRadioGroup: render a working menu in the docsite properties preview (#5976) Adds a `DropdownMenu` playground wrapper that opens on first load and two `DropdownMenuRadioItem` children, so the properties-tab preview shows selectable radio choices immediately instead of an empty container. #### Contributors Thanks to everyone who contributed to this release: - @Kyujenius --- # 0.5.3 #### New Components - Add built-in `popover`, `bottom-sheet`, and compact-touch `adaptive` presentation policies to DropdownMenu, MoreMenu, and ContextMenu. (#5395) - Add popover, bottom-sheet, and adaptive presentation options to Selector and MultiSelector, with docsite examples for both bottom-sheet variants. (#5395) - Add `isReadOnly` to Selector and MultiSelector so selected values remain focusable and form-submittable without exposing selection menus or editing affordances. (#5805) - Add the opt-in theme-local token contract for maintained theme families. (#5844) - Add `elevation` prop to ToggleButton for floating (FAB-style) toggles, mirroring Button; retained inside a ToggleButtonGroup. (#6012) #### New Features - Add structured accessibility requirements and theme coverage support to component documentation. (#5713) - Banner: the header's supporting line now carries a stable theme target, `astryx-banner-description`. (#5483) Only the header, the status icon and the content panel were themeable before, so a theme restyling the description — its colour, its type, or the space between it and the title — had to reach in with a structural selector like `.astryx-banner > div:nth-child(2) > div:nth-child(2)`. Purely additive: no existing class, data attribute, or style changes. Nothing else in the header becomes a target. The end area is a layout row — flex, wrap, and the edge compensation that lets its buttons overhang the header padding — not a painted surface, and a theme that wants the header to grow around its buttons instead of letting them overhang sets `padding-block` on the existing `banner` target, which reaches the same height without exposing a private margin. The title, the two controls and the text column are likewise left alone: the column paints nothing (`display: flex; flex-direction: column; gap: 0`) and the space it owns is expressible on `banner-description`, while the title and the controls already render the way the consuming theme wants them. - Add `nativePicker` to DateTimeInput for browser and OS date/time pickers, with Astryx time fallbacks for seconds, custom increments, and preset options. Native fields follow DateInput's compact minimum sizing in fit-content layouts. (#5620) - Let themes add typed Heading visual roles with a safe semantic-level fallback when the owning theme styles are unavailable. (#6026) - RadioListItem and CheckboxListItem accept rich `label` and `description` (#5257) `RadioListItem` typed `label` and `description` as `string` while its sibling `CheckboxListItem` already typed `label` as `ReactNode` — so the same slot had two contracts, and an app whose option descriptions carry links could not type them on either component. Both now take `ReactNode`; the runtime already rendered it. `RadioListItem` gains the `aria-label` escape hatch `CheckboxListItem` established, with the same meaning: a plain-text accessible name for the control. The radio differs in one way worth knowing — it points at its visible label for its accessible name, so a rich label still names it from its own text, and `aria-label` is there to narrow a name that reads badly rather than to supply a missing one. `aria-label` now lands on the radio instead of the row `

`, where ARIA ignored it. - Stepper: `--step-connector-gap`, so a theme can stop the on-track connector short of the indicator The on-track layouts draw the connector as one segment either side of the node. A theme that wants the track to leave a hole around the indicator had to reach the two segments separately, and they are only distinguishable by sibling position — which changes with `indicator="none"`. One public var does it instead, declared on the Stepper root because component vars are root-owned: a theme writes `stepper: {base: {'--step-connector-gap': '4px'}}` and every connector inherits it. Astryx spends it on whichever side each segment faces the node from, so the pair leaves a symmetric hole and the caller never names the pieces. `0px` by default: the shipped track still reads as one unbroken line. Measured in Chromium against a built theme override, reading painted pixels down a 12px segment: | value | clipped away | stepper height | | ------- | ------------- | -------------- | | `6px` | 6px | unchanged | | `-4px` | 0 | unchanged | | `1rem` | capped to 8px | unchanged | | `999px` | capped to 8px | unchanged | | `10%` | 1px (of 12px) | unchanged | | `50%` | capped to 6px | unchanged | Four things that had to be true and are: **A theme override reaches it.** The default is declared once on the root, not on each connector. Declared per-connector, every connector re-declared `0px` on itself, and a value declared on an element beats an inherited one — so a generated `stepper` override compiled cleanly and changed nothing. **The value is bounded**, and both halves earn it — neither for padding's reasons. `max(0px, …)` because `inset()` _accepts_ a negative length: Chromium computes `inset(0 0 -4px 0)` as written rather than clamping it the way it clamps negative padding, so the floor has to be declared. `min(…, --spacing-2)` — the flexible segment's own `min-height` — so an oversized gap leaves a short track rather than an unbounded one. Neither can grow the Stepper; a clip cannot change layout. (An earlier padding-based revision grew a three-step Stepper 108px → 144px at `1rem`.) **The horizontal clip mirrors under `dir="rtl"`.** `clip-path: inset()` is physical — top/right/bottom/left, no logical form — while the row itself reverses. Left unflipped, the leading segment sits to the _right_ of the node in RTL and still clipped its right edge, so the hole opened at the join between steps instead of at the indicator. Measured before the fix: `con0 x=622, indicator x=606, clips RIGHT edge`. After: `clips LEFT edge`, with LTR unchanged. The block axis needs no handling — `dir` does not reverse it. **One declaration covers both layers.** The gap has to reach the track (the segment's own background) and the accent fill (an absolutely placed `::before`). Spending it on each separately meant two declarations on two boxes, so a percentage resolved against a different containing block for each and stopped them ~1.2px apart. A single `clip-path: inset(…)` on the segment clips the element and its pseudo-element together against one reference box, so every accepted value behaves identically on both — which is what [#5824](https://github.com/facebook/astryx/pull/5824) requires of a public input across its full value domain. Clipping also cannot change layout, so the node the segment positions cannot move. **No indicator, no gap.** `indicator="none"` renders no node, so a gap there is a hole in a track that is meant to be continuous. Any CSS length or percentage is accepted and behaves the same way on both layers. A percentage resolves against each segment's own box, so a fixed and a flexible segment clip by slightly different amounts from one declared value — cosmetic, bounded by the cap, and recorded as accepted rather than fixed. **Why a custom property and not a guaranteed CSS property.** A theme target reaches the element, never its `::before`. Measured against a built theme override on `step-connector`: `paddingBlock: 6px` produces no hole at all — the background paints to its border box and the fill is out of reach — its only effect being the Stepper growing 108px → 120px; `paddingBlockEnd: 6px` produces no hole either, and addresses only one of the two edges. Only the component can clip both layers together, mirror per axis and direction, and clamp first. Adds `Stepper.spec.md`, the canonical owning record for this public property, carrying that admission argument, the value contract, and the anatomy-to-target map. `Stepper.doc.mjs` gains the anatomy entries its existing `stepper`, `step`, and `step-connector` targets never had, so every current target is anchored to a described part. Supersedes the `segment` variant this PR previously proposed. That exposed `lead` / `rail` / `content` as public theming vocabulary, which does not hold up: the words never appeared in the generated docs, they emit bare `lead` / `content` classes where a consumer's own stylesheet can collide with them, and `lead` means different geometry per orientation. The pieces are how this layout happens to be drawn today, not a contract. - Stepper's `horizontalOptions.collapsedVariant` lets a flow choose `withLabelAndControls`, `withLabel`, or `hiddenLabel` for its compact presentation. Use `withLabel` when the surrounding flow owns Back/Continue, or `hiddenLabel` when surrounding UI owns both the current-step heading and navigation and only a bare progress track is needed. The default preserves both label and controls, its controls require `onStepClick`, and every step keeps its name in the accessible sequence at any width. (#5659) - Stepper's `horizontalOptions.minimumStepWidth` configures the per-step width at which a horizontal Stepper collapses. Numbers are interpreted as pixels and strings accept CSS lengths such as `7rem`, `calc(6rem + 8px)`, and custom properties. The browser resolves string units through an invisible measurement element, and changes to the resolved value update the compact layout. Omitting the option preserves the existing 112px threshold. (#5659) - Stepper: add `astryx-step-label` and `astryx-step-description` theme targets. (#5728) Both text parts declare their own typography and color, so themes cannot reach them through the `step` target by inheritance. The new targets apply in both indicator positions and reflect `progress` and `status`. `step-label` also reflects `disabled`, because the label owns Stepper's disabled text paint. `step-description` does not. The new targets change no default style. - Stepper collapses itself in narrow containers instead of leaving each consumer to hand-roll a fallback: a horizontal stepper measures its own width and, once a step has under `horizontalOptions.minimumStepWidth` (112px by default), drops the labels to a bare track and uses the configured `collapsedVariant` beneath it. The breakpoint follows the step count rather than the viewport. Both `separated` and `on-track` leave their compact track presentational; navigation moves to named prev/next controls when configured and when `onStepClick` is set. On-track indicators stay on the rail without repeating the active indicator beside the compact label. The full sequence stays intact for screen readers throughout. (#5659) [fix] Step labels hold to a single line and ellipsize rather than wrapping and breaking mid-word, so a row of horizontal steps keeps one height and the track under it stays straight. The full label is still carried in the step's accessible name. [fix] The gap between connector segments is now `--spacing-1`, matching the connector's own thickness, so the track reads as one dashed line at any theme scale. - Add semantic Table row statuses while restoring custom-marker compatibility. Named custom icons keep their released Icon color mapping; raw CSS custom icons now use the caller's paint as required by the current contract. Canary users relying on implicit glyphs should switch from `color` to `status`. (#5832) - TabList: add an `isFullBleed` prop so a tab bar can bleed out to its container's inline content edges instead of requiring hand-written negative-margin CSS (#2622). Like Divider's `isFullBleed`, it cancels the nearest padded Layout container's `--container-padding-inline-*` custom properties with negative margins; the inner strip pads back by the amount the bleed exceeds a tab stop's own padding so edge labels remain aligned to the content inset. It is inline-only: TabList owns the inline full bleed, and the container owns the block-end dock. For that, LayoutHeader gains a `paddingBlockEnd` per-edge override in Section's existing spelling — `paddingBlockEnd={0}` docks the header's last child on its bottom edge so a tab strip's underline meets `hasDivider` at any header padding. The `detail-page` template now uses both props, aligns its ghost panel toggle with the container inset, and no longer carries any hand-written tab-row CSS. - Add `nativePicker` to TimeInput so coarse pointers use the browser/OS time picker by default, with `always` and `never` overrides. Seconds and custom increments retain Astryx's typed field. (#5811) #### Fixes - Keep AppShell's section top bar solid in auto-height mode while content scrolls beneath it. (#5873) - Extend attached field-status backgrounds behind the lower half of their controls so rounded and pill-shaped inputs connect without visible gaps while the control remains visually above and receives pointer input across the overlap. (#5769) - BottomSheet now keeps the iOS Safari browser-bar edge consistent with the sheet surface for both modal and non-modal presentations. (#5373) - Keep loading-button spinners at full contrast while interaction is blocked, and suppress pressed feedback for disabled and loading buttons. (#5627) - Carousel: mirror the single-edge fade gradients under RTL so the mask fades the physical edge that actually hides content (overflowStart/overflowEnd are logical edges, the gradients were always physical left/right) (#5586) - ChatComposerInput no longer discards a pending draft when you click the composer's padding and press ArrowUp. Focusing a contentEditable collapses the caret to the start of the draft, which is the one position where ArrowUp means "recall history", so the first ArrowUp after that click replaced what you had typed. The composer now places the caret after the draft when it focuses itself — clicking the space after the text means "put me there" — so ArrowUp moves the caret with a draft present and still recalls history when the composer is empty. Multi-line caret navigation is unchanged. (#6051) - ChatComposer: add a keyboard-only focus ring around the composer body when its editor receives focus (#5648) The ring uses the shared theme focus tokens and does not appear for pointer focus or when an internal action button owns focus. - Chat/useChatStreamScroll: an upward scroll releases auto-follow in both motion modes, and only the reader can release it. While following, the hook owns the container's position: it disables CSS scroll anchoring on the scroll element, so the only move the browser makes on its own is the resize clamp onto the bottom, and any other upward move is read as the reader. A wheel or drag a nested scroller consumes, or a block collapsing above the viewport, no longer touches the lock either way; unlocked, anchoring is restored. The wheel and touch listeners are gone. `jumpToBottom` also cancels the spring's pending frame, so animation loops cannot stack. (#5662, #5663) - ChatToolCalls now announces pending, running, complete, and failed statuses to assistive technology, including expandable rows and collapsed tool-call groups. (#5666) - ChatComposerInput: ArrowUp/Down only recall message history at the text boundaries, so the caret can move between lines of a multi-line draft (#4284) - CheckIndicator: start the docsite properties preview in the checked state (#5972) Seeds a `checked` playground default so the properties-tab preview shows a visible indicator on first load instead of an empty stage. - `Collapsible`'s trigger label now fills the row instead of hugging its own content, so a composed trigger can put something at the far edge next to the chevron. The trigger is a `space-between` flex row, but its label span had no `flex-grow` — so the free space collected between the label and the chevron, and a trigger built as `` with a right-hand element (a date, a count, a status) had that element parked against the label with a gap after it, unable to reach the edge that `space-between` implies. `flexGrow: 1` on the label is the whole change. For a plain text trigger nothing moves: the label was already flush to the start edge and the chevron to the end, and the box that grew is one the text does not fill. The flex floor is deliberately left at `auto`, so no label can now be squeezed narrower than its own content and start overlapping the chevron. (#5933) - DropdownMenuRadioItem: add playground wrapper and wire wrapper selection state for docsite preview (#5917) Wraps DropdownMenuRadioItem in DropdownMenuRadioGroup wrapper and keeps the wrapper's selection independent from the item's value knob, so aria-checked stays false until the item is activated and updates on click. - Keep DropdownMenu and submenu flyouts inside the viewport with safe inline gutters and viewport-aware height limits. Only overflowing menus become internal scroll containers, while `menuWidth` keeps its existing minimum-width behavior up to the available space. (#5395) [feat] Add an opt-in `presentation` prop for data-driven DropdownMenu instances so products can render the same actions as an anchored popover or a modal bottom sheet according to their own responsive input policy. - FieldLabel: a field's description now sits flush under its label without breaking existing label layout overrides. (#5673) A label and its description are one block of text, but nothing in `FieldLabel` said so. It returned a fragment, leaving the `` and the description `` as bare siblings of whatever column happened to hold them — so the space between them was set by that parent's `gap`, the same declaration that separates the label group from the control below it. No caller could close the pair without also pulling the control up against the description, and each had picked its own value. Measured in Chromium as `description.top - label.bottom`: | | label → description | description → control | | ------------------------- | ------------------- | ----------------------------------- | | `Field`, `TextInput` | 4px → **0px** | 4px → 4px | | `CheckboxInput`, `Switch` | 2px → **0px** | n/a — control sits beside the label | The label and description now share a wrapper of their own, so the space between them is theirs to set rather than a side effect of the caller's column. Only the pair closes up: the description → control gap is unchanged, so fields keep their existing rhythm. `CheckboxInput` and `Switch` each carried a 2px label wrapper to do this job locally, which the shared wrapper makes redundant, so all three callers now agree instead of each choosing a value. A hidden label group takes `display: contents`, so the wrapper box leaves the caller's layout entirely and the sr-only label and description stay out of flow exactly as they were — a hidden label still costs no space and draws no gap. This is one change in `FieldLabel` rather than a change across the ~20 input components, because every input reaches its label through `Field`. - useFocusTrap only restores focus when focus actually entered the trap while it was active. (#5651) `useFocusTrap` captured `document.activeElement` on activation and restored focus to it on deactivation whenever focus would otherwise be lost to ``. For popups that deliberately keep DOM focus on their trigger — a Typeahead or PowerSearch listbox opened with `role: "none"` and `hasAutoFocus: false` — the trap never receives focus, so the restore fired on outside-click dismissal and re-focused the anchor input. Because the input was then already focused, clicking it again fired no `focus` event and `hasEntriesOnFocus` could not reopen the menu — the control was stuck until a second outside click. The restore effect now tracks whether focus entered the trap container at any point while it was active (via a `focusin` listener). If focus never entered, the restore is skipped entirely. Popups that do take focus — Dialog, DropdownMenu, a Typeahead option click — are unaffected. - Core: track keyboard and pointer modality once per document instead of initializing global listeners from every consuming component. (#5881) - LayoutHeader: add playground wrapper and default children for docsite preview (#5918) Prevents the properties-tab preview on the docsite from rendering an empty stage by wrapping LayoutHeader inside a Layout scaffold with representative header text. - LayoutPanel: add playground wrapper and default children for docsite preview (#5919) Prevents the properties-tab preview on the docsite from rendering an empty stage by wrapping LayoutPanel inside a Layout scaffold with representative panel content in start slot. - Streamed Markdown no longer goes blank when the line still arriving contains an escaped pipe. A `\|` is literal text, not a table-cell delimiter, so a line carrying only escaped pipes is ordinary prose and renders as it streams instead of being held back as an unfinished table header. Genuine partial table syntax is still suppressed, and incremental parsing stays bounded to the stream tail. (#6051) - Popover layers now cap explicit widths and match-trigger sizing to the available viewport with alignment-aware token safe-area gutters, preserving trigger alignment while keeping the painted surface at least one spacing token from both viewport edges. Long content scrolls inside the layer instead of forcing page overflow on narrow viewports. Repeated resize and content-change signals coalesce overflow measurement to once per animation frame. Pointer-activated dialog popovers focus the labeled dialog container so the first action does not appear preselected, while keyboard activation still focuses the first content control. Read-only content uses the same container target without revealing the fallback close button, while preserving Tab access to that fallback escape control. (#5373) - Reuse `DateRangeInput` for PowerSearch date-range values so endpoint selection always emits an ordered range. (#6004) - useResizable: percentage configuration with an explicit basis (AST-010) Implements the accepted [AST-010](../docs/specs/AST-010/spec.md) contract. Percentages **configure** a pixel size; they never create a second, responsive sizing mode. - ResizeHandle: a drag survives the cursor crossing an embedded frame. (#5297) The handle listened for `pointermove`/`pointerup` on `window` without taking pointer capture, so the browser hit-tested every later event — and the moment the cursor entered an `