for #32014
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [X] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/guides/committing-changes.md#changes-files)
for more information.
## Testing
- [X] Added/updated automated tests
- [X] Where appropriate, [automated tests simulate multiple hosts and
test for host
isolation](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/reference/patterns-backend.md#unit-testing)
(updates to one hosts's records do not affect another)
- [X] QA'd all new/changed functionality manually
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## Summary by CodeRabbit
- New Features
- GitOps manual labels can now reference hosts by Fleet host ID in
addition to hostname, hardware serial, or UUID.
- GitOps YAML/JSON accepts integers for host IDs; numeric IDs are
handled seamlessly alongside strings.
- Validation
- Stronger input validation for label hosts: only strings or integers
are allowed.
- Clear error returned for invalid types (e.g., floats) in hosts lists.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->