Add /code-review and /web-ui-review skills

[haeter525]

Description

Adds two Claude Code skills for automated PR review:

1. /code-review for Python code review
2. /web-ui-review for web UI review

Prerequisites

1. Claude Code installed.
2. playwright-cli installed (only needed by /web-ui-review).
   • To install: npm install -g @playwright/cli@latest

How to use

/code-review

1. Open Claude Code at the Quark-Engine repo
2. Check out the branch to review
3. Type /code-review to start a review
   • Claude will read the changed files, run automated checks (black, pylint, mypy, bandit, coverage), perform a manual correctness review, and produce a summary table of all findings

Example: code-review-conversation.html

/web-ui-review

1. Open Claude Code at the Quark-Engine repo
2. Check out the branch containing the web UI file you want to review
3. Type /web-ui-review to start a review
   • Claude will open the file in a Playwright browser, run functional, accessibility, responsive, and security checks, and produce a summary table of all findings

Example: web-ui-review-conversation.html

Key Changes

• code-review/SKILL.md: adds the Python code review skills (/code-review)
• web-ui-review/SKILL.md: adds the web UI review skills (/web-ui-review)
• CLAUDE.md: project context file for Claude Code

Tests

• Run /code-review on #890 and verify Claude Code generates a review.
• Run /web-ui-review on Quark web report and verify Claude Code generates a review.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.32%. Comparing base (9fb4362) to head (95e37a2).
⚠️ Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #894      +/-   ##
==========================================
+ Coverage   81.31%   81.32%   +0.01%     
==========================================
  Files          80       80              
  Lines        6946     6952       +6     
==========================================
+ Hits         5648     5654       +6     
  Misses       1298     1298              

Flag	Coverage Δ
unittests	81.32% <ø> (+0.01%)	⬆️

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