Danny White 924b3f5793 feat(ui-patterns): add async selection feedback (#49843)
## What kind of change does this PR introduce?

Shared UI pattern and Studio UX improvement.

## What is the current behavior?

Async selectors use bespoke loading and error layouts. Some replace the
entire field while fetching, and opening a selector does not
consistently refresh its options.

## What is the new behavior?

Adds shared loading, error, and empty states for Select, command, and
MultiSelector lists, including a persistent polite live region and
reduced-motion support. Analytics Bucket and DuckLake selectors keep
their controls in place, retain populated options during background
refreshes, and refresh when reopened.

## To test

Open the [Replication
preview](https://studio-staging-git-dnywh-featasync-selection-feedback-supabase.vercel.app/dashboard/project/_/database/replication?destinationType=Analytics%20Bucket).
The destination sheet should already be open on **Analytics Bucket**.

You do not need to create a bucket, configure a destination, or start a
pipeline. Open **Select a bucket**, then review these outcomes:

1. **The trigger stays put.** Opening the picker must not replace the
form field with a full-width loading placeholder.
2. **Loading belongs inside the menu.** While options are fetched, the
open menu shows a compact skeleton list.
3. **No resources has a clear explanation.** If the project has no
Analytics Buckets, the menu says **No buckets available**. It still
offers **Create a new bucket** beneath that message.
4. **Existing options do not disappear on refresh.** If the project does
have buckets, close and reopen the picker. Its current options remain
visible while the refresh happens in the background, rather than
flashing back to skeletons.
5. **The pattern is consistent.** If convenient, select a bucket and
open the namespace or access-key picker. The same in-menu loading,
empty, and error treatment applies there too.

The deterministic request-error and reduced-motion cases are covered by
focused unit tests because the deploy preview cannot reliably force
those states.
2026-09-02 14:25:03 +10:00
2026-08-24 10:06:36 -06:00
2025-06-17 11:08:46 +02:00
2024-01-10 13:34:41 +01:00
2021-07-25 12:45:26 +08:00

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