{"agent":"claude","input":"Upgrade TypeScript to the latest version in this project and record the tsc --noEmit error count before and after. Copy src/config.ts.example to src/config.ts in the sandbox only. First update outdated @types packages and record how many errors that removes. Then fix every remaining error with real types: no any, no casts to unknown, no ts-ignore or ts-expect-error. Type jwt.verify payloads with an interface and a type guard, and extend Express's Request for req.user with a declaration. Start MySQL from ormconfig.json.example, run npm test, build and start the app. Open a pull request with the error counts at each step and a list of each fix grouped by cause.","resources":[{"url":"https://github.com/your-org/your-app"}]}