fix: onboard google-cloud-asset-v1 to Librarian

[suztomo]

Demonstration PR for librarian generate google-cloud-asset-v1.

Note: The fix: prefix in the title (fix: onboard google-cloud-asset-v1 to Librarian) is used to add this library to the next Release Please pull request.

Commits:

1. chore: add google-cloud-asset-v1 to librarian.yaml
   • Configures google-cloud-asset-v1 in librarian.yaml.
   • Includes additional_protos: [google/cloud/orgpolicy/v1/orgpolicy.proto] and ruby_cloud_opts.
2. chore: removing OwlBot-related files
   • Removed .OwlBot.yaml and .owlbot-manifest.json.
3. chore: regenerate the onboarded library using librarian
   • Generated client, protobuf, and gRPC files using librarian generate google-cloud-asset-v1 (built from latest upstream/main of Librarian & upstream/main of google-cloud-ruby).

Findings & Summary of Code Diff from upstream/main:

• Removal of OwlBot-related files: .OwlBot.yaml and .owlbot-manifest.json deleted as OwlBot postprocessor is superseded by Librarian.

• Description Update in README.md:

  • The gem description changed from "A metadata inventory service that allows you to view, monitor, and analyze all your GCP and Anthos assets across projects and services." to "The Cloud Asset API manages the history and inventory of Google Cloud resources.".
  • Reason: The previous description on main came from a handwritten ruby_cloud_description override in Bazel's BUILD.bazel. librarian generate derives ruby-cloud-description directly from documentation.summary in cloudasset_v1.yaml (PR fix(internal/librarian/ruby): pass documentation summary as ruby-cloud-description option librarian#7105).

• Product Documentation Link Removal in README.md:

  • README.md removed the section See also the Product Documentation (https://cloud.google.com/asset-inventory/).
  • Reason: The previous Bazel build passed ruby-cloud-product-url=https://cloud.google.com/asset-inventory/ in BUILD.bazel. librarian.yaml does not pass ruby-cloud-product-url, nor is publishing.documentation_uri present in cloudasset_v1.yaml.

• Copyright Year Update:

  • Header copyright years in 70 generated files updated to 2026 as expected.

• Protobuf Comments Update:

  • proto_docs/google/protobuf/timestamp.rb source comments updated to reflect protoc 33.2.

• Snippet File Permission Normalization:

  • Snippet file permissions normalized from 100755 to 100644.

• File & Version Preservation:

  • Pre-existing files in keep: (lib/google/cloud/asset/v1/asset_service/helpers.rb, test/google/cloud/asset/v1/additional_paths_test.rb), as well as version.rb, .repo-metadata.json, and CHANGELOG.md, are correctly preserved during regeneration.

• Kokoro - Presubmit/Samples failure:

  • The Kokoro sample CI failure is irrelevant to this change (test: minimal edit to google-cloud-asset-v1 to verify CI #35033 (comment)).

[suztomo]

@aandreassa This pull request and #35034 are ready for your review and being merged.

After librarian.yaml have the entries, we (Tomo/Joe) can work on setting up CI (googleapis/librarian#7135) and confirm the new "ruby-librarian" Release Please strategy (googleapis/release-please#2861).

[aandreassa]

@suztomo @JoeWang1127 please wait on #35037 and #35038 in order to minimize the diffs.

I already started working on it googleapis/ruby-common-tools#439

[suztomo]

For this particular pull request of one API, I don't think you have to wait for the work to minimize the diff. The review size is manageable by a human.

Having at least one library in librarian.yaml unblocks many work items: we (Tomo/Joe) can work on setting up CI (googleapis/librarian#7135) and confirm the new "ruby-librarian" Release Please strategy (googleapis/release-please#2861).

[aandreassa]

@suztomo please feel free to merge it