chore: configure CodeRabbit for automated PR reviews

[jfroche]

Enable auto-review and add custom labeling instructions for CI, extensions, infrastructure, Nix, Docker, AMI, security, tests, docs, and migrations.

Disable verbose summary options and GitHub checks integration.

Summary by CodeRabbit

• Chores
  • Enabled automated code reviews for pull requests targeting the develop branch with high-level change summaries.
  • Implemented automatic labeling for pull requests by change category (CI, extensions, infrastructure, Nix, Docker/AMI, security, tests, docs, migrations).
  • Streamlined review output (high-level summaries only) and disabled auto-replies and decorative/art outputs.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

📝 Walkthrough

Walkthrough

A new .coderabbit.yaml configuration file was added. It enables auto_review (enabled: true, drafts: false) for develop base branch, disables changed_files_summary while enabling high_level_summary, disables poem, review_details, review_status, sequence_diagrams, github-checks, chat art, and auto_reply, and sets knowledge_base.code_guidelines.filePatterns to include CONTRIBUTING.md. It also defines labeling_instructions covering labels: ci, extensions, infrastructure, nix, docker, ami, security, tests, docs, and migrations with corresponding trigger phrases.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description provides key details about what was enabled (auto-review, custom labeling) and disabled (verbose options, GitHub checks), but does not follow the repository's description template which requires selecting between Default or Extension Upgrade templates.	Update the description to follow the repository's template format by selecting and completing either the Default or Extension Upgrade template from the template options.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: configuring CodeRabbit for automated PR reviews, which directly matches the addition of the .coderabbit.yaml configuration file.
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.}

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In @.coderabbit.yaml:
- Around line 2-8: The header comment about CodeRabbit auto-review is
inconsistent with the YAML setting; update either the comment or the setting so
they match: change the header lines ("# Disable CodeRabbit auto-review...") to
reflect that auto_review is enabled, or set reviews.auto_review.enabled to false
to match the current comment; specifically modify the top comment block or the
reviews.auto_review.enabled key to keep the file consistent and unambiguous.