<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#34433
It speeds up the cron, meaning fleetd, bootstrap and now profiles should
be sent within 10 seconds of being known to fleet, compared to the
previous 1 minute.
It's heavily based on my last PR, so the structure and changes are close
to identical, with some small differences.
**I did not do the redis key part in this PR, as I think that should
come in it's own PR, to avoid overlooking logic bugs with that code, and
since this one is already quite sized since we're moving core pieces of
code around.**
# 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
* **New Features**
* Faster macOS onboarding: device profiles are delivered and installed
as part of DEP enrollment, shortening initial setup.
* Improved profile handling: per-host profile preprocessing, secret
detection, and clearer failure marking.
* **Improvements**
* Consolidated SCEP/NDES error messaging for clearer diagnostics.
* Cron/work scheduling tuned to prioritize Apple MDM profile delivery.
* **Tests**
* Expanded MDM unit and integration tests, including
DeclarativeManagement handling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
