What problem does it solve? React codebases accumulate lint violations, dead code, accessibility gaps, bundle bloat, and architecture problems that are hard to track manually. This Skill runs an automated diagnostic scan and reports a 0-100 health score so you can catch regressions before committing. ## Core Features & Use Cases - Regression Checking: Run with the --diff flag after making changes to verify your health score did not drop before committing code. - Full Codebase Audits: Scan the entire project for security, performance, correctness, and architecture issues, sorted by severity. - Verbose Diagnostics: Use --verbose to see affected files and line numbers for every rule violation. - Use Case: After finishing a feature branch, run the diff scan to confirm your changes did not introduce new lint errors, dead code, or accessibility issues before opening a pull request. ## Quick Start Ask the AI to run react-doctor on this project with the diff flag and report whether the health score regressed.