Add Anthropic and OpenAI API smoke tests

[jrhemstad]

Summary

Adds isolated API smoke-test workflows for validating that GitHub Actions can call Anthropic and OpenAI with repository secrets.

• Anthropic smoke uses ANTHROPIC_API_KEY and asks Claude to return a fixed marker.
• OpenAI smoke uses OPENAI_API_KEY and asks the OpenAI Responses API to return a fixed marker.

Scope

• runs only on pull-request/[0-9]+ branch pushes
• no intentional failing job
• no GitHub Actions log fetching
• no artifact upload
• keeps the temporary CI matrix override so the draft smoke-test PR stays cheap to run

Validation

• git diff --check
• workflow YAML parsed with Ruby YAML.load_file
• embedded Node scripts syntax-checked via vm.Script

[copy-pr-bot]

This pull request requires additional validation before any workflows can run on NVIDIA's runners.

Pull request vetters can view their responsibilities here.

Contributors can view more details about this message here.

[jrhemstad]

/ok to test 983bf2b

[jrhemstad]

/ok to test 533ef9b

[jrhemstad]

/ok to test e37c229

[jrhemstad]

/ok to test 460658e

[jrhemstad]

/ok to test c717fd2

[jrhemstad]

/ok to test d7ba7e7

[github-actions]

😬 CI Workflow Results

🟥 Finished in 1m 52s: Pass: 0%/1 | Total: 1m 52s | Max: 1m 52s

See results here.