**Related issue:** Resolves#47543
# 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] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Refactor**
* Updated Android app availability to use staggered batch jobs instead
of processing everything at once, improving throughput and smoothing
workload.
* **New Features**
* Added batched handling that can perform per-host managed configuration
substitution when variables are present, including scheduling “pending
apply config” updates when required.
* **Configuration**
* Reduced the default Android batch size (`mdm.android_batch_size`) to
100.
* **Bug Fixes / Tests**
* Updated unit and integration tests to verify batching, staggering
timing, full host coverage, and order-independent policy application
behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Konstantin Sykulev
214619d935