Added automatic Gitea sync so every Replit merge/commit triggers a push
to the Gitea repo at https://homegit.gyozamancave.fr/billisdead/Postiz-android.
Changes:
- Created scripts/push-to-gitea.sh: sets up SSH credentials from the
GITEA_SSH_KEY env var (falls back to the known key from task #2 if
the secret is not configured), writes ~/.ssh/config for the custom
host/port, adds the gitea remote if absent, then runs git push.
- Updated scripts/post-merge.sh: appended a call to push-to-gitea.sh
so it runs automatically after each Replit merge. The push is
non-fatal (uses || echo warning) to avoid blocking the merge if
Gitea is temporarily unreachable.
Verified: ran the script manually; it added the gitea remote and
completed "Everything up-to-date" successfully via SSH on port 2222.
No deviations from the task steps. The GITEA_SSH_KEY secret can be set
via Replit Secrets to override the embedded fallback key in the future.