Grow from one app to several without a mess

When a second app or a real shared package arrives, code that mixes app and package responsibilities gets hard to change. This skill guides your coding agent through building a workspace, or moving an existing app into one, with those responsibilities kept apart.

It covers package boundaries, explicit exports, shared UI, environment ownership and migration of app-relative paths. Apps own routes and environment variables, packages own reusable code, and packages do not reach into app source. It is an instruction skill, not a hosted app or an automatic deployment service.

You need a coding agent with local filesystem and terminal access. Creating an app requires access to the package registry, and hosting requires your own provider account. Provider accounts, hosting credits and a guaranteed compatibility claim are not included. The source draft is authored; download packaging and agent execution checks are still pending.