Python: Cannot exit `ipdb` `interact` mode

System details:

Positron and OS details:

Positron Version: 2025.07.0 build 999
Code - OSS Version: 1.100.3
Commit: 5d0a419a120cd6f951d3656a7e02d3ff15c75007
Date: 2025-06-28T11:01:41.371Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

Session details:

Python 3.12.5.

Describe the issue:

I can't exit interactive mode in an ipdb debug session.

Steps to reproduce the issue:

1. Run %debug in the console.
2. Run interact in the ipdb activity prompt.
3. Try to exit with Ctrl+D, Ctrl+C, exit(), quit(), none of which work. Only force quitting works.

Expected or desired behavior:

In IPython, in interact mode:

• Ctrl+D once shows an exit confirmation message (related to https://github.com/posit-dev/positron/issues/2073), and Ctrl+D a second time exits to the ipdb prompt.
• Ctrl+C does nothing in ipdb or interact.
• exit, exit(), quit, and quit() all exit to the ipdb prompt.

Were there any error messages in the UI, Output panel, or Developer Tools console?

No.

Reproduce the issue by running %debug, entering interact at the ipdb activity prompt, and trying Ctrl+D, Ctrl+C, exit(), and quit(). Compare the behavior with the expected IPython interaction described in the issue, including the two-step Ctrl+D confirmation. Done means each exit command reaches the ipdb prompt without force quitting.