Claude c5e1157f47 Fix shenv clobbering forwarded SSH socket with local agent in tmux ...

ssh/rc env changes (including SSH_REMOTE_AUTH_SOCK) are lost because
ssh/rc runs as a sshd child process, not the user's shell. The shell
always receives SSH_AUTH_SOCK set to the raw forwarded socket path.

Fresh SSH login worked fine (step 1 catches the raw socket). The bug
was in tmux new windows: SSH_AUTH_SOCK there is our stable symlink, so
step 1 fails, then steps 2/3 look up the system agent and overwrite the
symlink that ssh/rc just set to the forwarded socket.

Fix: only run the system agent lookup when the stable symlink is already
broken. A valid symlink means ssh/rc (or a previous shenv run) already
set it correctly; don't clobber it.

https://claude.ai/code/session_01RhXaFzxJA5D2BcGcz18ipA

2026-04-19 01:47:36 +00:00

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