chores: add .repo-metadata.json for google-cloud-vectorsearch

[Linchin]

Need to add the file before generating due to the following error:

LIBRARIAN_GITHUB_TOKEN=$(gh auth token) legacylibrarian generate -api=google/cloud/vectorsearch/v1 -library=google-cloud-vectorsearch -push
go: github.com/googleapis/librarian@v0.8.0 requires go >= 1.25.5; switching to go1.25.7
time=2026-02-18T01:01:32.302Z level=INFO msg="temporary working directory" dir=/tmp/librarian-1186255432
time=2026-02-18T01:01:32.302Z level=INFO msg="repo not specified, using current working directory as repo root" path=/usr/local/google/home/lingqinggan/temp/google-cloud-python
time=2026-02-18T01:01:32.302Z level=INFO msg="opening repository" dir=/usr/local/google/home/lingqinggan/temp/google-cloud-python
time=2026-02-18T01:01:39.242Z level=ERROR msg="librarian command failed" err="/usr/local/google/home/lingqinggan/temp/google-cloud-python repo must be clean"
exit status 1

[gemini-code-assist]

Summary of Changes

Hello @Linchin, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces the necessary metadata for the google-cloud-vectorsearch client library. This addition is fundamental for enabling automated processes like documentation generation and client library management, ensuring that the new Vector Search API is correctly recognized and integrated into the broader Google Cloud Python ecosystem.

Highlights

• New Service Metadata Added: A new .repo-metadata.json file was added for the google-cloud-vectorsearch client library. This file contains crucial information such as API description, documentation links, issue tracker, and release level, which is essential for automated tooling and proper integration within the Google Cloud ecosystem.

Changelog

• .librarian/generator-input/packages/google-cloud-vectorsearch/.repo-metadata.json
  • Added a new .repo-metadata.json file to define the metadata for the google-cloud-vectorsearch library.

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[gemini-code-assist]

Code Review

This pull request adds the .repo-metadata.json file for the google-cloud-vectorsearch library. The metadata provided in the file appears to be accurate and complete, with all keys correctly structured and sorted. I have no specific feedback or suggestions for improvement. The change is good to merge.