v0.15.0rc5 release prep

[Intron7]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 5b6066f7-ae94-4957-a5f9-e3ce8f864a55

📥 Commits

Reviewing files that changed from the base of the PR and between 3f3c0cc and bf5e7ae.

📒 Files selected for processing (1)

• docs/release-notes/0.15.0rc5.md

📝 Walkthrough

Walkthrough

Updates CodeRabbit configuration to enable request changes workflow and adds path-specific review instructions for RAPIDS single-cell source code, enforcing test coverage checks and CUDA synchronization requirements. Also updates release notes documentation file references.

Changes

Cohort / File(s)	Summary
CodeRabbit Configuration .coderabbit.yaml	Enabled request_changes_workflow behavior. Added new path_instructions rule for src/rapids_singlecell/** with enforcement of test coverage checks, multi-GPU CUDA array copy patterns (disallowing inlined cross-device cp.asarray arithmetic), and explicit synchronization of non-blocking CUDA streams. Updated knowledge_base.code_guidelines.filePatterns to reference .coderabbit/-prefixed guideline files.
Release Notes docs/release-notes/0.15.0rc5.md, docs/release-notes/index.md	Updated release-notes heading for version 0.15.0 from slug the-future to date 2026-03-21. Updated release notes index to reference 0.15.0rc5.md instead of 0.15.0.md.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• add coderabbit.ai #617: Directly related as both PRs modify .coderabbit.yaml to update path-specific review instructions and knowledge base guideline file patterns for the repository configuration.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	No pull request description was provided by the author, making it impossible to assess relatedness to the changeset.	Add a description explaining the purpose of the release preparation changes, including highlights of configuration and documentation updates.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'v0.15.0rc5 release prep' clearly and specifically describes the main purpose of the changeset—preparing the v0.15.0rc5 release.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch v0.15.0rc5-release

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.75%. Comparing base (989baca) to head (bf5e7ae).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #622   +/-   ##
=======================================
  Coverage   87.75%   87.75%           
=======================================
  Files          96       96           
  Lines        6997     6997           
=======================================
  Hits         6140     6140           
  Misses        857      857