fix(ci): scope preview-server build to phase-server to avoid openssl-sys feature unification

[matthewevans]

Summary by CodeRabbit

• Chores
  • Updated the preview server build process to target the phase-server package directly.
  • Preserved the existing build profile, binary selection, and target platform settings.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 36bcaa47-0506-46bd-9229-f5926a1c70c4

📥 Commits

Reviewing files that changed from the base of the PR and between b9c7371 and f589124.

📒 Files selected for processing (1)

• .github/workflows/preview-server.yml

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📝 Walkthrough

Walkthrough

The preview server workflow now builds the phase-server package explicitly with cargo build -p phase-server, while retaining the existing profile, binary, and target settings.

Changes

Preview server build

Layer / File(s)	Summary
Scope Cargo build to phase-server .github/workflows/preview-server.yml	The workflow adds comments describing workspace feature unification and adds -p phase-server to the existing build command.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the CI workflow change to build only phase-server and captures the stated openssl-sys motivation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ship/preview-server-scope

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