TCM_SERVER_GONE
What an import of #tcm/server is told: it was the module tcm generated for the server API, which is the server
library tcm ships now.
export const TCM_SERVER_GONE = '#tcm/server is the server library now: `tcm lib add tcm server` mounts the one tcm ships (at <root>.lib.server), and code imports it from there: `import { table } from "#codebase/<root>/lib/server"`'