feat: Add review tool for code review functionality

[Lies188]

Summary

This PR adds a new review tool to the Codex MCP server that enables automated code review using the Codex CLI's codex review command.

Changes

New Files

• src/tools/review-codex.tool.ts: New review tool implementation

Modified Files

• src/tools/index.ts: Register the review tool in the tool registry
• src/utils/commandExecutor.ts: Add cwd parameter support for executing commands in specific working directories

Features

The review tool supports all codex review CLI options:

Parameter	Description
uncommitted	Review staged, unstaged, and untracked changes
commit	Review changes from a specific commit SHA
base	Review changes against a base branch
title	Optional commit title for review summary
prompt	Custom review instructions
config	Configuration overrides (key=value)
enableFeatures	Enable feature flags
disableFeatures	Disable feature flags
workingDir	Specify the git repository directory
timeout	Custom execution timeout (ms)
debug	Return raw output for troubleshooting

Usage Examples

// Review uncommitted changes
{ "uncommitted": true, "workingDir": "/path/to/repo" }

// Review a specific commit
{ "commit": "abc1234", "workingDir": "/path/to/repo" }

// Review changes against main branch
{ "base": "main", "workingDir": "/path/to/repo" }

// With custom review instructions
{ "commit": "abc1234", "prompt": "Focus on security issues", "workingDir": "/path/to/repo" }

Testing

Tested with:

• --commit scenario
• --uncommitted scenario
• --base scenario
• Custom prompt scenario
• Debug mode

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via HAPI