Release v3.17.0

Added

• A generated application now includes a frontend: an Arc-mounted React entry point with its bundler and TypeScript configuration, a package manifest pinned to exact versions, and a host that serves the bundle and routes deep links back to it. (#100)
• The scaffold profile carries the exact npm package versions a generated frontend is pinned to, kept separate from both the emitted backend packages and the versions Stage itself builds with. (#100)

Fixed

• The emitted scaffold bytes are frozen by a specification, so a change that should not alter generated output has to prove it did not.