PM-35200 - Create contributing guide for Claude tooling

[theMickster]

🎟️ Tracking

PM-35200

📔 Objective

Craft guidance for engineers to understand contributing to Claude tooling.
The guidance in the other-side-of-the-coin for ai-plugins/pull/88.

[github-actions]

🤖 Bitwarden Claude Code Review

Overall Assessment: APPROVE

Reviewed a documentation-only change that adds .claude/CONTRIBUTING.md (130 lines) — a guide for engineers contributing Claude tooling to this repo. The guide explains scoping rules (root vs. nested CLAUDE.md, skills, agents, commands, rules), the boundary between repo-specific content and bitwarden/ai-plugins, security conventions for skills/agents that touch vault data, and an iterative authoring workflow. Content is consistent with the existing .claude/ layout and reinforces Bitwarden's zero-knowledge invariant where security-relevant tooling is concerned. No code paths, dependencies, configuration, or runtime behavior are affected.

Code Review Details

No actionable findings. Purely additive Markdown; voice and structure align with the neighboring .claude/CLAUDE.md, links resolve, and scoping guidance is internally consistent. PR title, description, and Jira link are adequate; no test plan needed for a docs-only change.

[github-actions]

Checkmarx One – Scan Summary & Details – d1344fd8-23b0-409d-b1b7-2a510812f336

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.08%. Comparing base (2373dce) to head (8570720).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2592      +/-   ##
==========================================
- Coverage   87.17%   86.08%   -1.09%     
==========================================
  Files        1886     2116     +230     
  Lines      166863   181678   +14815     
==========================================
+ Hits       145463   156402   +10939     
- Misses      21400    25276    +3876     

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[fedemkr]

🤔 @theMickster should it explain when to use ai-review-vnext label as well?

[theMickster]

Sure; I'm not opposed to you altering the document in a PR 😄
In all honesty, the label is intended to be used by the people actively working on code review enhancements so we don't negatively impact the entire organization. I personally am inclined to leave this as-is for now.