ci(deploy-site): run test and build in parallel

[jaredwray]

Summary

• build no longer waits on test — they now run in parallel.
• deploy now requires both test and build to succeed (needs: [test, build]), so the test gate is preserved while wall-clock time on a release drops to roughly max(test, build) + deploy.
• build never consumed any output from test, so this change is purely a scheduling optimization.

Job graph

test ─┐
      ├──> deploy
build ┘

Test plan

• Trigger deploy-site via workflow_dispatch and confirm test and build start in parallel and deploy waits for both.
• On a throwaway commit, force a failing test and confirm deploy is skipped.
• On a green run, confirm the dist artifact is uploaded by build and downloaded by deploy as before.

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Generated by Claude Code

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (7e3e302) to head (133115d).

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #149   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           37        37           
  Lines         1089      1089           
  Branches       222       222           
=========================================
  Hits          1089      1089           

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