[BUG] Not able to --continue sessions with large .jsonl files. Those sessions are also dropped from --resume overview

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

This might or not be related to this issue: https://github.com/anthropics/claude-code/issues/18311

Some of my prompts are very large. I cannot --continue those sessions. It will tell me:

> claude --continue
No conversation found to continue

What Should Happen?

I should be able to continue my session that physically exist as .jsonl file in .claude/projects

Error Messages/Logs

No conversation found to continue

Steps to Reproduce

1. Create a new project or worktree
2. Run claude and ask it to summarize the following book
3. Copy and paste Frankenstein from https://www.gutenberg.org/cache/epub/84/pg84.txt into your terminal
4. Wait for claude's response
5. Exit claude and run claude --continue

It will tell you: No conversation found to continue

1. Run claude --resume and it will show you an empty list.
2. But if you look up the session id manually and run claude --resume <UUID> it is able to resume the session

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.31

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_