[split] Main changes — from #21

[RoniKishner]

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
• Modified init to include _proc attribute for subprocess handle and updated self.child type hint
• Modified connect() to call _terminate_proc on error for clean subprocess shutdown
• Modified disconnect() to check subprocess status via _proc.poll() and ensure _terminate_proc is called
• Added _spawn_console() function to create PTY and run virtctl via subprocess, replacing pexpect.spawn
• Added _terminate_proc() function to gracefully and forcefully shut down the console subprocess
• Updated console_eof_sampler() to use _spawn_console() internally and removed obsolete parameters

How this split maps your changes

• Refactor branch (split-pr-21-1782579575-refactor): files classified as cleanup / mechanical work:
  • utilities/unittests/test_console.py
• Main branch (split-pr-21-1782579575-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: #31

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