End-to-end, in this studio, means one thread of responsibility: understand the operation, design the experience, engineer the software and leave it running. It does not mean every layer is custom, and it does not mean a separate team appears at launch and inherits an unexplained codebase.
Discovery is specific. Who signs in, what they are trying to finish, which record is the source of truth, and what happens when that record is wrong. A roadmap that skips those questions tends to produce screens that demo well and stall in week two of real use.
Planning then cuts a release that can go live. The first version should include the path people repeat, the empty and failure states on that path, and a deployment story. Adjacent ideas wait.
Design and engineering stay in the same conversation. A workflow that cannot be represented in the data model should change before it is illustrated. A screen that hides a required decision should change before it is built.
Launch covers the unglamorous pieces: domain, environment variables, mail delivery, access, and a named owner for what happens the morning after. Evolution is the releases that follow from real use, not a promise of unlimited change.