[split] Main changes — from #21

[pull-apart]

Automated split from #21.

Context

This is the main / behavior half of an automated split from #21.

Changes in this PR:

• utilities/console.py: Added imports for pty, shlex, subprocess, and pexpect.fdpexpect
• Added _proc attribute to manage subprocess.Popen instance
• Modified connect() to call _terminate_proc() on error path and updated console_eof_sampler() call
• Modified disconnect() to check _proc.poll() status before re-spawning console and added _terminate_proc() call
• Added _spawn_console() function to create a pty pair and wrap subprocess in pexpect.fdpexpect.fdspawn
• Added _terminate_proc() function for graceful and forceful subprocess shutdown
• Simplified console_eof_sampler() by removing parameters and using _spawn_console() internally

How this split maps your changes

• Refactor branch (split-pr-21-1782310171-refactor): files classified as cleanup / mechanical work:
  • utilities/unittests/test_console.py
• Main branch (split-pr-21-1782310171-main): files classified as feature / behavior work:
  • utilities/console.py

Merge order

Merge the refactor PR first if it touches shared files or would conflict with the main PR; then merge the main PR. Resolve conflicts in the usual way if both branches touch the same lines.

Refactor PR: #28

To close this PR and delete its branch, comment @pull-apart /close.

[RoniKishner]

@pull-apart /close