#### PR Dependency Tree
* **PR #15485** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **New Features**
* Upgraded built-in AI actions and chat model selection to Gemini 3.7
Flash.
* Transcript attachments now retain storage keys and support secure
presigned URLs during processing.
* Completed transcript results preserve attachment metadata for reliable
access.
* **Bug Fixes**
* Improved transcript handling across uploads, retries, and native
processing.
* Added safeguards for invalid or missing attachment URLs.
* **Maintenance**
* Added a migration to backfill storage keys for existing transcript
records without altering their URLs.
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