* feat(ssh): support file transfers over system ssh
* fix(ssh): harden system file transfers
* test(runtime): stub getRepo in headless mobile tab cwd test
The mobile-session selector validator (getValidatedExplicitWorktreeIdSelector,
from main) calls this.store?.getRepo to reject repo ids passed as worktree ids.
The store stub only implemented getWorkspaceSession, so the guarded call threw
'getRepo is not a function' once main merged into this branch. Add a getRepo
that returns null (wt-1 is a worktree, not a repo).
Co-authored-by: Orca <help@stably.ai>
---------
Co-authored-by: Jinjing <6427696+AmethystLiang@users.noreply.github.com>
Co-authored-by: Orca <help@stably.ai>
