- replace `git push --mirror` with `git push --force --all --prune` and `git push --force --tags`
- update sync-auto.yml and sync-schedule.yml workflows
- improve control over branch and tag synchronization
- gitLab rejects refs that start with origin/, so the --mirror option is no longer used for pushing. Therefore, it has been reverted to using git push --force --all --prune followed by git push --force --tags.
- rename existing sync.yml to sync-auto.yml for clarity
- add new sync-schedule.yml workflow for automated hourly synchronization
- configure SSH-based mirroring to remote repository with fail-fast strategy
- include success/failure summary reporting for each sync job
- disable HTTP sync job by default for future use
