Large integer precision error in Bash command output rendering

Claude Code incorrectly displays large integers in bash command output, showing a different value than what was actually output by the command.

Steps to Reproduce

1. Run the following command in Claude Code:

echo '348555896224571969'

Or with jq:

echo '{"value": 348555896224571969}' | jq -c .value

Expected Behavior

Claude Code should display: 348555896224571969

Actual Behavior

Claude Code displays: 348555896224571970 (off by 1)

Verification

Running the same command in a native terminal correctly outputs: 348555896224571969

Environment

• Claude Code version: v2.0.37
• Model: Sonnet 4.5 (Claude Max)
• Platform: macOS (Darwin 24.3.0)

Screenshots

<img width="1429" height="339" alt="Image" src="https://github.com/user-attachments/assets/20f67c06-ddb6-4431-bfe6-b047043aab0a" />