Add org.freeciv.gtk4

[freeciv-github]

In a recent poll about freeciv flatpak features,
request for a new flatpak for gtk4-client came out top.

Next new client will be sdl3-client in 2026 release of freeciv-3.2.

Please confirm your submission meets all the criteria

• Please describe your application briefly.
• I have read the App Requirements and App Maintenance pages.
• My pull request follows the instructions at App Submission.
• I have built and tested the submission locally.
• I am using only the minimal set of permissions. (If not, please explain each non-standard permission.)
  Permissions to ~/.freeciv are so that various freeciv modpacks can share some data (e.g. installed modpack) there. The same permission is already given to all existing freeciv flatpaks.
• All assets referenced in the manifest are redistributable by any party. If not, the unredistributable parts are using an extra-data source type.
• I am an author/developer/upstream contributor of the project. If not, I contacted upstream developers about submitting their software to Flathub. Link:
• The domain used for the application ID is controlled by the application developers either directly or through the code hosting (e.g. GitHub, GitLab, SourceForge, etc.). The application id guidelines are followed.
• Any additional patches or files have been submitted to the upstream projects concerned. (If not, explain why.)

[bbhtt]

bot, build org.freeciv.gtk4

[flathubbot]

Queued test build for org.freeciv.gtk4.

[flathubbot]

Started test build 121763

[flathubbot]

Build 121763 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/104706/org.freeciv.gtk4.flatpakref

[bbhtt]

bot, build org.freeciv.gtk4

[flathubbot]

Queued test build for org.freeciv.gtk4.

[flathubbot]

Started test build 122366

[flathubbot]

Build 122366 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/105307/org.freeciv.gtk4.flatpakref

[barthalion]

/merge

[flathubbot]

A repository for this submission has been created: https://github.com/flathub/org.freeciv.gtk4

You will receive an invitation to be a collaborator which will grant you write access to the repository above. The invite can be also viewed here.

If you've never maintained an app on Flathub before, common questions are answered in the app maintenance guide. If you're the original developer (or an authorized party), verify your app next to let users know it's coming from you.

Thanks!