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 78.89%. Comparing base (1df1d49) to head (da393cf).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #894   +/-   ##
=======================================
  Coverage   78.89%   78.89%           
=======================================
  Files          81       81           
  Lines        7131     7131           
=======================================
  Hits         5626     5626           
  Misses       1505     1505           

Flag	Coverage Δ
unittests	78.89% <ø> (ø)

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