It looks like worktrees are implicitly created for sessions.

It looks like worktrees are implicitly created for sessions. I think that there should be some prompt, at least the first time, to ask what branch the worktree should be created from.

For example, I was working my local dotnet/roslyn repo, which has both `origin` and `upstream` remotes. My `origin/master` branch is from ~2021. I think `upstream` has no `master` branch--we migrated from `master`->`main` naming. So I was super confused when the agent could not find stuff that I expected to be there.

If it had just asked me first (possibly recommending a default), what branch/ref to create the worktree off of, then the confusion could have been avoided.

---
| Field | Value |
| --- | --- |
| App version | 1.1.3 |
| OS | Windows 10.0.26200 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 1 |

Empieza rastreando el flujo de la sesión que crea worktrees implícitamente y, después, reprodúcelo con un repositorio que tenga varios remotes y ramas predeterminadas diferentes. Comprueba cómo se determina actualmente la selección de branch/ref. Se considera terminado cuando la primera sesión relevante solicita el branch base o ref para el worktree, tiene un valor predeterminado claro y evita elegir silenciosamente un branch inesperado.

Escrito por el modelo de indexación a partir del texto del issue.