{
  "summary": "This pull request implements a new user authentication system using JWT tokens. It adds endpoints for user registration, login, and logout, along with necessary database schema changes and middleware for token validation.",
  "key_changes": [
    "New UserAuth module added",
    "Implementation of JWT token generation and validation",
    "Database schema updated to include user credentials",
    "New API endpoints for registration, login, and logout",
    "Middleware for authenticating protected routes"
  ],
  "potential_impacts": [
    "Affects all protected routes in the application",
    "Changes to the database schema require migration for existing systems",
    "Potential performance impact due to token validation on each request"
  ],
  "critical_review_areas": [
    "Security measures in token generation and validation",
    "Password hashing implementation",
    "Error handling and edge cases in auth flow",
    "Database migration script for existing users"
  ],
  "suggested_reviewers": [
    "@security-expert",
    "@backend-lead",
    "@database-specialist"
  ],
  "test_results": "All unit tests passing. Integration tests for auth flow added and passing. Overall test coverage increased by 2%.",
  "code_quality_metrics": {
    "linting_errors": 0,
    "code_coverage": "92%",
    "cyclomatic_complexity_average": 2.3
  },
  "additional_notes": "This PR introduces a breaking change in how protected routes are accessed. Documentation updates and team communication are recommended before merging."