Security and Rate Limiting Implementation

[Cheffromspace]

Description

Implement security measures and rate limiting handling for the PR review system.

Acceptance Criteria

• Security measures:
  • Secure handling of API keys
  • Proper permissions for GitHub token
  • Input validation for all external data
  • Protection against potential security vulnerabilities
• Rate limiting:
  • GitHub API rate limit handling
  • Anthropic API rate limit handling
  • Backoff strategies for retries
  • Clear error messages for rate limit issues
• Error handling:
  • Graceful handling of API errors
  • Clear error reporting
  • Logging of issues without exposing sensitive data
• Documentation for security considerations

Technical Details

• Implement secure handling of API keys using GitHub secrets
• Validate all inputs from GitHub events
• Handle GitHub API rate limits with appropriate backoff
• Handle Anthropic API rate limits
• Implement comprehensive error handling