[BUG] Some Session files break Auto complete propagation on start

Environment

• Platform (select one):
• [x] Anthropic API
• Claude CLI version: 1.0.3
• Operating System: macOS 15.5
• Terminal: iTerm2

Bug Description

After launching claude code the Project's custom commands are not available through autocomplete though they still run when called manually.

Steps to Reproduce

🤷

Expected Behavior

Autocomplete should propagate with custom tools

Actual Behavior

It does not show custom tools from the project

Additional Context

I noticed this the first time today in a more active project. After some trial and error i noticed it can be fixed by cleaning up the session files in ~/.claude/projects/

I kept trying and moving around files until i noticed it comes down to certain files causing trouble. I can't 100% reproduce but it seems to mainly be the big files causing troubles - maybe also the partly extreme long lines in the jsonl format are the issue. However - it should likely not cause the custom commands not load on application start. I'm also not sure why it needs to scan through all the session files on a start without -r to resume previous sessions. It should usually not be required to scan previous sessions but it seemingly does. One of the most recent sessions grew a bit too large maybe (8,1MB) so maybe it's caused by this. Some lines are even longer than 60k characters.

Maybe there's a way to at least manually override the loading of previous sessions if i want to start a new one anyways.