Sorry, I'm slow in reviewing this :(

+Version: 0.3.0+git20240401.330f67d That seems not accurate - 0.3.0 has not been tagged, and as such this version can barely be ahead of 0.3.0. The app identifies itself as 0.3.0 - but as that's not yet released, you more likely want a Version: 0.3.0~git…

_service:

+ <param name="versionformat">0.3.0+git%cd.%h</param>

please see about every other package in GNOME:Factory how we create the version entry (it's basiclaly always [@PARENT\_TAG](https://build.opensuse.org/users/PARENT_TAG)@+[@TAG\_OFFSET](https://build.opensuse.org/users/TAG_OFFSET)@)

from _service:

+  <service name="recompress" mode="manual">
+    <param name="file">*.tar</param>
+    <param name="compression">zst</param>
+  </service>

tar and recompress services can be set as mode="buildtime" - check in the .obscpio instead of the .tar.zst

<service name="tar_scm" mode="manual">

please use obs_scm service