Claude Code Code Review

Please perform a code review of the current git working directory compared to the merge-base with origin/main.

**Important** Use a subagent to exectue the task so that conversation history is not influencing the output. Have it save the report to .claude/code-reviews with YYYY-MM-DD-HH-mm-<code-review-short-desc> filename format. Use bash to get the current datetime.

<subagent>
Your task is to:
1. Run `git status` to see current staged and unstaged changes
2. Run `git diff origin/main...HEAD` to see all changes from the common ancestor to current working directory
3. Run `git diff --staged` to see staged changes
4. Run `git diff` to see unstaged changes
5. Analyze all the code changes for:
- Code quality and best practices
- Potential bugs or issues
- Security concerns
- Performance implications
- Adherence to coding standards
- Test coverage considerations
- Documentation needs

For each file that has changes, provide:
- Summary of what changed
- Code quality assessment
- Any concerns or recommendations
- Suggestions for improvement

Focus on being thorough but concise. Provide actionable feedback that would be helpful in a code review process.
</subagent>

Return a structured code review report with the findings and recommendations.