Tooltip: add enter/exit opacity animation with data-[instant] support
Dialog: add overflow-y-auto for long content, optional closable button
Select: add clearable/loading props to trigger, disable alignItemWithTrigger
- Add z-50 to all overlay Positioners so overlays inside a Dialog
(e.g. Tooltip on a dialog button) are not clipped by its backdrop
- Replace @floating-ui/react Placement import with self-owned type
definition to remove the transitive type dependency
- Change Dialog popup transition-all to explicit transition-[transform,scale,opacity]
to avoid animating unintended CSS properties
- Add motion-reduce:transition-none to all animated overlay elements
for prefers-reduced-motion compliance
Remove z-index tokens from tailwind config. With root `isolation: isolate`,
portaled overlays naturally sit above app content via DOM order.
- Tooltip / Popover / Dropdown: no z-index needed
- Dialog: z-50 (modal must cover non-modal portals)
- Toast: z-[99] (always on top, defined in toast component)
- Install @base-ui/react 1.2.0
- Define semantic z-index layer tokens (dropdown/popover/modal/toast/tooltip)
- Add TooltipProvider to root layout with global timing config
- Mark portal-to-follow-elem as deprecated with migration guide
- Enforce no-restricted-imports as error with suppression baseline
- Add ESLint rule to block new portal-to-follow-elem usage in business code
- Scaffold Phase 1 semantic primitives: Tooltip, DropdownMenu, Popover, Dialog
Part of #32767
