Watt 3: Serving Node.js Applications

Watt 3 is a major release of the Node.js Application Server featuring parallel application startup/shutdown for faster deployments, native TypeScript support through type stripping, renamed composer to gateway for better API gateway functionality, and architectural modernization with ESM modules and Node.js 22+ requirement. The release includes 15 breaking changes, unified CLI experience, clearer terminology (capabilities instead of stackables), and extraction of client generation into standalone Massimo project.