Hangs if there is a multi gb .tar.gz file in current directory #683

Started with just

cd /folder/thefolder
opencode

When starting a chat all that was displayed was the generated title for the chat, not the "user input" box. Trying to send more messages got the "session is busy" error box.

Had 3 gb .tar.gz file copied over via ssh in the "thefolder", when I removed that I could once again use opencode.

Sadly no snapshot of FS so I could check more info about the file.

Possible repro steps:

1. cd ~/Projects/projectname
2. scp copy 3gb tar.gz file from ssh host where local host username, id and gid matched remote username, id and gid
3. run opencode
4. send a message "hello"
5. see title change to "# Hello greeting"
6. see no more output
7. send another message
8. see error box with "session is bust"