#### PR Dependency Tree
* **PR #15477** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **New Features**
* Added support for custom signed download URLs with configurable CDN
origins, object paths, expiration times, and security signatures.
* Custom download signing is available when both the URL prefix and
signing key are configured.
* **Bug Fixes**
* Preserved custom URL and signing settings when generating download
links.
* Added validation for invalid signing configurations.
* Standard S3 storage continues using its existing presigned URL
behavior.
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