test: use shared test utilities

[chenjiahan]

Summary

This PR adopts @rstackjs/test-utils v0.2.0 to remove duplicated file, logging, polling, and port helper implementations from the Rstack CLI tests. It also adds a test-local prepareDist fixture and a thin logHelper extension with expectBuildEnd(), following Rsbuild's fixture APIs while keeping repository-specific behavior under #test-helpers.

Related Links

• https://github.com/rstackjs/test-utils/releases/tag/v0.2.0

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 45312e3c-b99d-4183-a90f-886f1160b1fc

📥 Commits

Reviewing files that changed from the base of the PR and between d5c5598 and f6ac23c.

📒 Files selected for processing (4)

• packages/rstack/test/config/reload-app-config/index.test.ts
• packages/rstack/test/helpers/cliTest.ts
• packages/rstack/test/helpers/index.ts
• packages/rstack/test/helpers/logs.ts

📝 Walkthrough

Walkthrough

The change adds @rstackjs/test-utils to the workspace catalog and package development dependencies. Rstack test helpers now use shared logging, file, port, and distribution-preparation utilities. A prepareDist fixture is added to the CLI test fixtures. Configuration and CLI tests use prepared output directories, while reload tests use file-waiting and log assertions.solete local helper exports and the BUILD_END_LOG constant are removed.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title succinctly reflects the main change: switching tests to shared utilities.
Description check	✅ Passed	The description matches the changeset by describing the shared test-utils migration and new fixtures.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chenjiahan/use-test-utils

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