PM-26544 - Initial create of a CLAUDE.md and a code review action

[theMickster]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-26544

📔 Objective

An initial creation of a Claude markdown and a code review action.
Tried to leverage both Claude and my own limited knowledge of our internal SDK to create the Claude markdown.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation
  team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed
  issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions]

Checkmarx One – Scan Summary & Details – 2f1fcacf-4fca-4e1b-94de-da10bc3af6be

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

[withinfocus]

This looks fine to me, but I'd want @dani-garcia and @Hinton pointing out what should be in the instructions.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.10%. Comparing base (ae9b8b5) to head (63df571).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #493   +/-   ##
=======================================
  Coverage   78.10%   78.10%           
=======================================
  Files         283      283           
  Lines       27628    27628           
=======================================
  Hits        21579    21579           
  Misses       6049     6049           

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[quexten]

The updated notes about crypto seem reasonable.

[withinfocus]

Tiny thing we should just fix and then I'll approve.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[dani-garcia]

LGTM, just one small suggestion to also mention mobile and cli in the wasm section

[dani-garcia]

We can probably expand this section to be something like:

**Business logic in the application crates**

- `bitwarden-wasm-internal`, `bitwarden-uniffi` and `bw` contains only thin bindings. Move business logic to feature crates.

By application crates, I mean the ones that are meant to be directly used by our applications (web, mobile, cli)