git.comunes.org is Forgejo. Replicates the analyze + commons_core/app_seeds test
gate in .forgejo/workflows/ci.yml (per-push + PR). Dropped the GitLab-only Windows
job (no Forgejo Windows runner).
git.comunes.org runs Forgejo Actions, not GitLab CI, so the tag-triggered
signed-AAB build + fastlane Play upload now lives in .forgejo/workflows/release.yml
(single job, no cross-job artifact passing). Removed the equivalent GitLab jobs;
.gitlab-ci.yml keeps only the analyze/test gate. Play service account is reused
from Ğ1nkgo. docs/release.md updated (Forgejo secrets).