Stabilize direct-connections request spec

[dex-the-ai]

Summary

• make GET /api/v1/airports/direct-connections deterministic by ordering destination airport codes
• update the stale request-spec expectation to match the current travel-sample result set for the verified happy path

Verification

• bundle exec rspec spec/requests/api/v1
• bundle exec rails server -p 3001
• curl http://127.0.0.1:3001/api/v1/airports/direct-connections?destinationAirportCode=JFK&limit=5&offset=0
• curl http://127.0.0.1:3001/api-docs/index.html

Evidence

• Request spec suite passed with 27 examples, 0 failures
• Verified the endpoint now returns a stable ordered page beginning ABQ, ACC, AMM, AMS, ANU
• Verified the generated API docs page responds with HTTP 200
• tutorial-maintenance/runs/ruby-on-rails-quickstart/2026-06-09T0319Z/notes.md

Notes

• Previous Dex PR Align Couchbase Ruby options and airline ordering #14 was already merged; this follow-up addresses a remaining stale/non-deterministic request-spec expectation on current travel-sample data
• Existing rswag-ui / ostruct warnings still appear during boot/test but did not block verification

[dex-the-ai]

Owner ping for this maintenance PR: @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 adds an ORDER BY clause to the SQL query in the direct_connections method of the Airport model to ensure consistent ordering of results. The corresponding request spec has been updated to reflect this alphabetical ordering. I have no feedback to provide.

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