Add src/placeholder.test.ts to confirm the Vitest harness works end-to-end (npm test passes). Update CLAUDE.md project structure to reflect the now-created src/ directory. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Configures TypeScript with strict: true, target ES2020, rootDir src/, outDir dist/. tsc --noEmit passes cleanly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- npm init with express (prod) and typescript, ts-node, @types/express, @types/node, eslint, @typescript-eslint/parser, @typescript-eslint/eslint-plugin, vitest (dev) - Add .gitignore excluding node_modules/ and dist/ - Add CLAUDE.md documenting chosen stack, commands, and project structure Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>