[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: pty, shlex, subprocess, pexpect.fdpexpect, TimeoutExpiredError
• Added _proc attribute (subprocess.Popen) to Console class
• Modified connect() to call self.console_eof_sampler() without arguments and added TimeoutExpiredError to exception handling
• Modified connect() and disconnect() to call _terminate_proc() for cleanup
• Modified disconnect() condition to check self._proc.poll() instead of child.terminated
• Added new method _spawn_console() to create a pty pair and wrap subprocess.Popen in pexpect.fdpexpect.fdspawn
• Added new method _terminate_proc() to gracefully or forcefully shut down the subprocess
• Simplified console_eof_sampler() parameters and updated func to self._spawn_console

How this split maps your changes

• Refactor branch (split-pr-21-1783491041-refactor): files classified as cleanup / mechanical work:
  • utilities/unittests/test_console.py
• Main branch (split-pr-21-1783491041-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: #41