Per the design pivot: the account choice is only a real decision at project birth, so it belongs as a roadblock in the new-project / init-in-a-new-dir flow (evolving the dead-end _NotARepoDialog), not a welcome-screen list. Opening an existing project never prompts. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>