[BUG] Bug Report: Points Deducted for Interrupted Response with No Completed Work

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?

I uploaded a file to Claude Code and requested data processing. The response was interrupted mid-execution while running Python code. Points were deducted from my account, but absolutely no work was completed - no output was generated and the uploaded file was lost from the session. Now I have to upload the file again and spend more points to retry the exact same task.

What Should Happen?

Either the task should complete successfully with points charged, OR if the response is interrupted before completion, points should be automatically refunded since no work was delivered. Additionally, uploaded files should be preserved in the session even if the response is interrupted, so users don't lose their data and have to re-upload.

Error Messages/Logs

System reminder shows interrupted response state:

User: 1. 내신 변형 문제에 쓸 데이터 이다. 
2. 이 데이터 보고 다듬어줘. (AI에게 줄거니 AI가 알아보기 쉽게 변형해도 된다. ) 
3. 추가적으로 넣거나 만들거나 , 변형해야 할 것이 있으면 너가 해도 된다. 
4. 마지막에 어떤 학교들 데이터가 있는지 나에게 알려줘.

A: 먼저 첨부된 문서를 읽어보겠습니다.

⚪️ **Bash**(cd /root/workdir && python3 -c "
from docx import Document
doc = Document('mnt/Date_20260221.docx')
for i, para in enumerate(doc.paragraphs):
    print(f'[{i}] {para.text}')
")

⠼ **Running**...

[Response interrupted at this point]

After resuming session:
$ ls -lah mnt/
total 1.0K
drwxr-xr-x 2 root root 6 Feb 22 08:46 .
drwxr-xr-x 3 root root 6 Feb 22 08:46 ..

[File not found - directory empty]

Steps to Reproduce

1. Upload a .docx file to Claude Code
2. Request data processing task in the chat
3. Claude Code starts processing (begins running Python code to read the file)
4. Response gets interrupted mid-execution (shows "Running..." status)
5. Check point balance - points have been deducted
6. Check session - no output generated, uploaded file is gone from mnt/ directory
7. User must re-upload the same file and pay additional points to retry

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

"Claude Sonnet 4.5"

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

mnt_github_issue.md

mnt_github_issue.md