**Related issue:** Resolves#47700
# Checklist for submitter
- [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.
- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements), JS
inline code is prevented especially for url redirects, and untrusted
data interpolated into shell scripts/commands is validated against shell
metacharacters.
- [ ] Timeouts are implemented and retries are limited to avoid infinite
loops
## Testing
- [x] Added/updated automated tests
- [ ] QA'd all new/changed functionality manually. **_Not able to do for
all code paths yet_**
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added `token_invalid` for Apple Business Manager tokens, automatically
tracked based on Apple responses.
* Enhanced host DEP assignment API responses with a structured
`dep_device_error` field to classify why device details couldn’t be
retrieved.
* **Bug Fixes**
* Improved error handling for DEP device lookup, distinguishing
invalid/rejected tokens, expired terms, not-found devices, server/API
errors, and unavailable/unspecified failures.
* Added regression and unit test coverage for ABM token invalidation and
DEP device error classification.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Andrew Mellor
d06a4c222c