Less queries

[geichelberger]

Filter-driven reloads are now centralized to prevent multiple data
fetches at once. Further, added a feature to cancel ongoing requests and
ensure that older responses don’t replace newer data.

After applying filters, there’s a temporary pause on auto-refresh to
prevent interruptions while users are still filtering.

Removed duplicate fetch behavior in search/filter apply logic by
avoiding page-navigation fetch plus manual reload in the same
interaction.

[github-actions]

Use docker or podman to test this pull request locally.

Run test server using develop.opencast.org as backend:

podman run --rm -it -p 127.0.0.1:3000:3000 ghcr.io/opencast/admin-interface:pr-1542

Specify a different backend like stable.opencast.org:

podman run --rm -it -p 127.0.0.1:3000:3000 -e PROXY_TARGET=https://stable.opencast.org ghcr.io/opencast/admin-interface:pr-1542

It may take a few seconds for the interface to spin up.
It will then be available at http://127.0.0.1:3000.
For more options you can pass on to the proxy, take a look at the README.md.

[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/1542/2026-04-03_14-43-49/ .
It might take a few minutes for it to become available.