Git for Windows defaults to core.autocrlf=true, which renormalizes the
repo's LF-only text files to CRLF in the working tree. On a managed,
never-user-edited clone this makes tracked files (.envrc, AGENTS.md,
agent/*.py, workflows) show as locally modified, so the update path's
bare git checkout aborts with 'Your local changes would be overwritten
by checkout' and the desktop bootstrap fails at stage=repository.
The bash installer already autostashes before checkout; the PowerShell
path had no dirty-tree handling at all and never pinned autocrlf.
Fix: (1) git reset --hard HEAD before fetch/checkout in the update path
to discard any pre-existing dirt, and (2) pin core.autocrlf=false on both
the update and fresh-clone paths so the dirt is never created again.
214b7e070f