<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#42735
- Exposes max_software_package_size in the `GET /api/v1/fleet/config`
endpoint
- Add frontend logic to use it to deny files that are too big before
they get uploaded
# 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.
- [ ] 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
- [ ] If paths of existing endpoints are modified without backwards
compatibility, checked the frontend/CLI for any necessary changes
## Testing
- [x] Added/updated automated tests
- [ ] 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
- Tested on Chrome, Safari, and Firefox on macOS
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a configurable maximum software package size to application
settings.
* Software uploads exceeding the limit are rejected with a clear,
size-specific error message.
* Packages at or below the configured limit are accepted.
* Added user-friendly file-size formatting across common units.
* Upload validation accounts for the complete request size, including
scripts and settings.
* **Tests**
* Added coverage for upload validation, boundary conditions, size
formatting, and configuration responses.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Jonathan Katz
a0805e49d8