Align Couchbase Ruby options and airline ordering

[dex-the-ai]

Summary

• switch the quickstart to the current Couchbase::Options::* builders used by the Ruby SDK
• make the destination-airline query order deterministic with ORDER BY air.name ASC
• update the request spec expectations to match the stable ordering returned by the query

Verification

• bundle exec rspec spec/requests/api/v1
• bundle exec rake rswag:specs:swaggerize

Evidence

• tutorial-maintenance/runs/ruby-on-rails-quickstart/2026-05-05T0145Z-subagent/verification.txt

Notes

• No qualifying Dex PR coverage existed for this repo when this follow-up started.

[dex-the-ai]

Owner ping for this maintenance PR: @teetangh @shyam-cb

Requesting review from the manifest-listed owner(s) where GitHub does not already show a pending review request.

[gemini-code-assist]

Code Review

This pull request updates the Couchbase SDK usage by migrating to the Couchbase::Options namespace and adds an alphabetical sort order to the to_airport query in the Airline model, with corresponding updates to the test suite. The review feedback identifies a critical issue where Couchbase::Options::Query is called without the .new method, which will likely result in a NoMethodError. Additionally, it is recommended to simplify the parameter logic in the Airline model to improve code readability.