chore: isolate frontend and backend via npm workspaces and @mmapp/contracts

Co-authored-by: Cursor <cursoragent@cursor.com>

shared/api/servers.ts

@@ -6,7 +6,7 @@ import {
   type ServerRead,
   type ServerUpdate,
   type TestConnectionRequest,
-} from "@/packages/contracts/src/servers"
+} from "@mmapp/contracts/servers"
 import { requestJson } from "@/shared/api/http-client"
 
 type TestConnectionResponse = {