The wrapper's workingDir is the neutral /tmp, and everything master grew since
1.33.2 that branches on session.remote or session.docker read that as a local
session working in /tmp, because an adopted session keeps its connection on
adopt.remote and adopt.docker.
So uploads wrote into /tmp and closing the tab recursively deleted the shared
folder; the Git panel, its fetch and the fetch scheduler ran git on whatever sat
there; the image watcher, Read My Mind and the Discord bridge used that folder;
last-response paired a transcript by it and could show another conversation's
answer as this one's; a magic link in a container's output registered a file
from this host's /tmp; and guarded input could type into a human's composer.
Each now refuses or answers unsupported, the browser hides the rows that cannot
work, and Session Options shows where the foreign pane was instead of /tmp.
The custom-model route refuses as well, since it restarts the CLI in the pane.
The local version probe is skipped: the local binary says nothing about a
process someone else started, possibly on another host.
Also moves the guard test to port 0, which test-ports-guard now requires.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>