v1.3.1

## What's Changed
* chore: update ogx-client to ^1.3.0 in UI lockfile by @cdoern in https://github.com/ogx-ai/ogx/pull/6385
* fix(vector-io): persist vector store metadata to kvstore in Milvus, Chroma, and Weaviate (backport #6371) by @mergify[bot] in https://github.com/ogx-ai/ogx/pull/6421
* fix(prompts): raise typed not-found errors to preserve HTTP keep-alive (backport #6440) by @mergify[bot] in https://github.com/ogx-ai/ogx/pull/6442
* fix(vertexai): map "default" service_tier to None instead of "standard" (backport #6424) by @mergify[bot] in https://github.com/ogx-ai/ogx/pull/6446
* fix(revert): remove remote::passthrough inference provider (backport #6453) by @mergify[bot] in https://github.com/ogx-ai/ogx/pull/6465


**Full Changelog**: https://github.com/ogx-ai/ogx/compare/v1.3.0...v1.3.1