Creation ticket for Wikimedia-Search was T89556: Create Phabricator project "Wikimedia-Search" to track ongoing work to improve search across all Wikimedia projects and apps hence CC'ing its subscribers here and asking for input.
Search-Team was created in T94493: Create Search-Team project.

Feel free to delete the project if it makes you feel better. That said, we'll be creating new projects soon though, as search-related work is going to start ramping up.

We've been using the Search-Team board to coordinate the various search-related work, including Wikidata Query Service, CirrusSearch, Elastic, etc. This makes things simple to manage, since everything is tracked under a single umbrella.

Since the team is currently very small, we don't run into issues of a noisy/chaotic backlog, however as the team grows we might need to reevaluate this.

I suggest waiting at least a couple days before making any changes in this area (eg: team projects especially search ones). Actually, I more than suggest but not quite decree :)

To follow up: The Search Team will be cleaning up all the search-related phabricator projects. Please don't delete this one except as part of that larger effort.

This seems strongly related to T95932: Automatically add tasks to "Discovery" project via Herald; wondering if there's any decision yet whether this project is still wanted or used?

The Wikimedia-Search project has been made redundant, and @ksmith has archived it. Delete it, or not, in accordance with whatever policy you have.

Unlike CirrusSearch and other similar projects, Wikimedia-Search was not an existing "feature" project. It was created recently, and was never really used. As Deskana said, it has been archived and is not needed.