Split PR devcontainer CI into pip and conda jobs

[bdice]

Description

Split the PR workflow devcontainer build into two jobs, devcontainers-conda and devcontainers-pip, by passing python_package_manager as ["conda"] or ["pip"] to build-in-devcontainer.yaml. pr-builder depends only on devcontainers-conda; devcontainers-pip is added to checks ignored_pr_jobs so it does not block merge. Shared permissions and build_command are deduplicated with YAML anchors (merge keys are avoided so zizmor can validate the workflow); devcontainers-conda is listed first in the workflow file.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[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: Enterprise

Run ID: 07e1d89e-98dd-4051-b35a-d17b34eb502f

📥 Commits

Reviewing files that changed from the base of the PR and between 1ffb236 and a3a2576.

📒 Files selected for processing (1)

• .github/workflows/pr.yaml

🚧 Files skipped from review as they are similar to previous changes (1)

• .github/workflows/pr.yaml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated CI/CD workflow to support testing across multiple Python package managers, expanding test coverage.

Walkthrough

Split the single devcontainer workflow job into devcontainers-conda and devcontainers-pip, extract a shared build_command anchor used by both, update pr-builder.needs to devcontainers-conda, and add devcontainers-pip to checks.with.ignored_pr_jobs.

Changes

Devcontainer Job Separation

Layer / File(s)	Summary
Define conda and pip devcontainer jobs .github/workflows/pr.yaml	Adds devcontainers-conda (with python_package_manager: ["conda"]) and devcontainers-pip (with python_package_manager: ["pip"]), and extracts a shared &devcontainers-build-command anchor referenced by both jobs.
Update job dependency and ignore list .github/workflows/pr.yaml	Updates jobs.pr-builder.needs to depend on devcontainers-conda and extends jobs.checks.with.ignored_pr_jobs to include devcontainers-pip.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly and concisely summarizes the main change: splitting the devcontainer CI job into separate pip and conda jobs, which matches the core objective of the changeset.
Description check	✅ Passed	The description thoroughly explains the changes, including the rationale for splitting jobs, how each job is configured, dependency management, and technical implementation details using YAML anchors.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[bdice]

/merge