Improve temp dir cleanup in xe class

[BrennanGit]

I'm not sure a good way to actually test the things in this repo so would appreciate some help in review.

[Copilot]

Copilot review overview

🟡 Changes recommended

Cleanup failures remain silent, forced termination can still leak directories, and the unrelated CI migration needs clarification.

Review effort: Balanced
Findings: 3

Open (3)

• Unrelated CI library upgrade and workflow migration · New
• Forced worker termination leaks temporary directories · New
• Explicit close can hide failed temporary-directory cleanup · New

What changed in this PR

Improves cleanup of temporary directories used for XE inspection and simulator execution.

Changes:

• Adds explicit, idempotent XE cleanup.
• Ensures cleanup during initialization and simulation failures.
• Migrates the Jenkins pipeline to newer shared-library APIs.

File	Description
lib/​python/​Pyxsim/​xe.py	Adds explicit temporary-directory cleanup.
lib/​python/​Pyxsim/​pyxsim.py	Cleans XE resources during termination.
lib/​python/​Pyxsim/​__init__.py	Adds cleanup around simulation and tracing.
Jenkinsfile	Updates CI library and repository checks.

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[xross]

I'm not sure a good way to actually test the things in this repo so would appreciate some help in review.

We really need to add tests to his repo!

What was the high-level problem you were trying to solve here?

[BrennanGit]

Basically, the ubu builders got overwhelmed recently by builds from lib_voice and soundwire which killed them with OOM errors.

When I tried to bring them back, they got stuck on a start job for >30m which turned out to be them deleting thousands upon thousands of small directories in /tmp.

Even now if I go and check a "healthy" builder, there are 31423 folders in /tmp with the contents like config.xml image_n0c0.elf platform_def.xn program_info.txt xscope.xscope.

I checked a couple of the elf headers and found some for soundwire and for i3c so I suspect its the shared code in pyxsim thats not cleaning up the temp dirs properly.