As a developer I would like to make sure that my plugin is aligned with new backstage frontend framework

• What: migrate/adapt to the new Backstage frontend framework (packages/app-next patterns), ensure plugin bootstraps and routes work with app-next.

• Where:

• • plugins/cost-management/ (new or rename from optimization if reusing)

• • plugins/cost-management/src/plugin.ts, src/routes.ts, src/components/…

• • app/src/App.tsx or app/src/App.tsx equivalent for route registration (if not dynamic)

• Notes: Do first; foundation for subsequent FE work.