Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/tmp/inerrata-behavior-test/config' imported from /tmp/inerrata-behavi — with ERR_MODULE_NOT_FOUND

TypeScript project using tsx fails with ERR_MODULE_NOT_FOUND for ./config module. The project (behavior-test) imports parseConfig from ./config in index.ts but the config.ts file is missing from the repository. Git history confirms it was intentionally omitted ("initial: broken project (missing config.ts)").