v1.9.0

### General changes

- Export `CssVariables` and `DataAttributes` types (#5243) by @superhooman
- Fix stale focused field state (#5345) by @atomiks
- Fix animation waits retaining detached elements (#5719) by @flaviendelangle
- Keep item registration in sync when items change under Strict Mode (#5862) by @atomiks
- Avoid re-rendering inactive triggers on open and close (#5865) by @atomiks

### Accordion

- Fix `<Accordion.Trigger>`'s `data-value` and `data-index` attributes (#5705) by @cpruijsen
- Apply the native `disabled` attribute to `<Accordion.Trigger>` when using native buttons (#5607) by @atomiks
- Expand `hiddenUntilFound` panels synchronously on `beforematch` (#5514) by @aarongarciah

### Alert Dialog

- Don't associate a programmatically opened popup with a trigger that did not open it (#5641) by @michaldudak

### Autocomplete

- Fix `autoHighlight` for asynchronous results (#5818) by @atomiks
- Pass the originating event to `onItemHighlighted`. Pointer events may be `MouseEvent` or `PointerEvent`; typing reports the reason `none` (#5838) by @atomiks
- Decouple automatic unmounting from `actionsRef`. Call `eventDetails.preventUnmountOnClose()` in `onOpenChange` to opt out of automatic unmounting (#5734) by @michaldudak

### Checkbox

- Prefer `aria-label` over associated labels (#5787) by @atomiks

### Collapsible

- Apply the native `disabled` attribute to `<Collapsible.Trigger>` when using native buttons (#5607) by @atomiks
- Finish closing when the render function removes the panel (#5890) by @michaldudak
- Restore animations when a removed panel reopens (#5891) by @michaldudak
- Expand `hiddenUntilFound` panels synchronously on `beforematch` (#5514) by @aarongarciah

### Combobox

- Fix stale chip focus after returning to the input (#5879) by @mdm317
- Fix `autoHighlight` for asynchronous results (#5818) by @atomiks
- Decouple automatic unmounting from `actionsRef`. Call `eventDetails.preventUnmountOnClose()` in `onOpenChange` to opt out of automatic unmounting (#5734) by @michaldudak
- Fix label focus in Shadow DOM (#5871) by @lyzno1
- Pass the originating event to `onItemHighlighted`. Pointer events may be `MouseEvent` or `PointerEvent`; typing reports the reason `none` (#5838) by @atomiks
- Reset typeahead state when closing without moving focus (#5816) by @mdm317
- Accept readonly arrays for multiple values (#5710) by @MonstraG
- Share item indicator implementation (#5728) by @flaviendelangle
- Improve mount performance of large lists (#5819) by @atomiks
- Combine item store subscriptions (#5863) by @atomiks

### Dialog

- Keep parent open when closing a nested dialog in a closed shadow root (#5780) by @atomiks
- Don't associate a programmatically opened popup with a trigger that did not open it (#5641) by @michaldudak

### Drawer

- Preserve swipe release velocity after a trailing stationary pointer event (#5658) by @padd60
- Fix swipe release velocity on 120 Hz input (#5845) by @atomiks
- Remove excess virtual keyboard scroll space (#5768) by @atomiks
- Avoid excess keyboard spacing in Chrome on iOS (#5774) by @atomiks
- Fix native focus scrolling on iOS 27 (#5769) by @atomiks
- Handle CloseWatcher close requests from the cancel event (#5770) by @atomiks
- Add `x` and `y` options to `data-base-ui-swipe-ignore` (#5808) by @citrus
- Scroll instead of swiping when a drag starts on an SVG (#5844) by @atomiks
- Avoid touch event overhead while the drawer is closed (#5864) by @atomiks
- Preserve item taps when dismissing the virtual keyboard (#5882) by @atomiks
- Avoid retaining unmounted drawers in `<Drawer.Provider>` (#5921) by @atomiks
- Don't associate a programmatically opened popup with a trigger that did not open it (#5641) by @michaldudak

### Field

- Avoid warnings when an uncontrolled `<Field.Control>`'s `defaultValue` changes (#5881) by @atomiks
- Fix label focus in Shadow DOM (#5871) by @lyzno1

### Menu

- Add menu filtering behavior with `<Menu.FilterProvider>`, `<Menu.Input>`, and the `onItemHighlighted` callback (preview) (#5527, #5838, #5840, #5868) by @atomiks and @jjenzz
- Fix nested menus without a root trigger (#5645) by @LukasTy
- Fix event listener cleanup in `<Menu.Trigger>` (#5764) by @sai6855
- Release parent menu subscriptions when a submenu unmounts (#5833) by @santiago-ramos-02
- Pass the native event to `onOpenChange` when an item press closes the menu (#5789) by @michaldudak
- Close submenu when focus returns through its guard (#5793) by @jjenzz
- Toggle submenus on repeated trigger activation (#5824) by @jjenzz
- Reset typeahead state when closing without moving focus (#5816) by @mdm317
- Fix focus guard loop when the trigger is the only tabbable element (#5733) by @atomiks
- Fix hover-out animations when switching between detached triggers (#4261) by @michaldudak
- Don't start a viewport transition when the trigger remounts while closed (#5887) by @michaldudak
- Keep transition state consistent when reopening a retained popup (#5738) by @LukasTy
- Improve mount performance of large lists (#5819) by @atomiks

### Number Field

- Fire `<NumberField.ScrubArea>`'s `onClick` once per click (#5889) by @michaldudak

### OTP Field

- Fix Safari IME composition over-filling slots (#5098) by @atomiks

### Popover

- Fix focus guard loop when the trigger is the only tabbable element (#5733) by @atomiks
- Fix hover-out animations when switching between detached triggers (#4261) by @michaldudak
- Don't start a viewport transition when the trigger remounts while closed (#5887) by @michaldudak
- Keep transition state consistent when reopening a retained popup (#5738) by @LukasTy

### Preview Card

- Don't start a viewport transition when the trigger remounts while closed (#5887) by @michaldudak

### Radio Group

- Prefer `aria-label` over associated labels (#5787) by @atomiks
- Prevent ignored arrow keys from selecting on refocus (#5643) by @tjdsksro90
- Correct `inputRef` forwarding and cleanup (#5775) by @lyzno1

### Scroll Area

- Remove presentational viewport role (#5813) by @sarthakmalik0810

### Select

- Decouple automatic unmounting from `actionsRef`. Call `eventDetails.preventUnmountOnClose()` in `onOpenChange` to opt out of automatic unmounting (#5734) by @michaldudak
- Fix label focus in Shadow DOM (#5871) by @lyzno1
- Reset typeahead state when closing without moving focus (#5816) by @mdm317
- Synchronize root props through the store (#5589) by @flaviendelangle
- Share item indicator implementation (#5728) by @flaviendelangle
- Improve mount performance of large lists (#5819) by @atomiks
- Combine item store subscriptions (#5863) by @atomiks
- Accept readonly arrays for multiple values (#5710) by @MonstraG

### Slider

- Fix label focus in Shadow DOM (#5871) by @lyzno1
- End drags on `touchcancel` and `pointercancel` (#5639) by @brijeshb42
- Fix touch track taps not firing `onValueCommitted` (#5779) by @atomiks
- Preserve single-element array values on pointer interaction (#5781) by @atomiks

### Switch

- Prefer `aria-label` over associated labels (#5787) by @atomiks

### Tabs

- Fix selecting tabs with function values (#5886) by @michaldudak

### Toast

- Keep timers paused during overlapping interactions (#5809) by @lyzno1

### Tooltip

- Don't start a viewport transition when the trigger remounts while closed (#5887) by @michaldudak

All contributors of this release in alphabetical order: @aarongarciah, @atomiks, @brijeshb42, @citrus, @cpruijsen, @flaviendelangle, @jjenzz, @LukasTy, @lyzno1, @mdm317, @michaldudak, @MonstraG, @padd60, @sai6855, @santiago-ramos-02, @sarthakmalik0810, @superhooman, @tjdsksro90