[lab] Add "Processes Shell" CS537 Spring 2019 Project

[qimcis]

Description

This project was seen as part of CS537 in Spring 2019

See original repo

Testing

Did a simple test with openai/gpt-5.2-2025-12-11:

python3 run_benchmark.py \
  --tasks data/tasks_ostep_processes_shell.jsonl \
  --model openai/gpt-5.2-2025-12-11 \
  --max-steps 200 \
  --max-cost 2000

Model ran, and successfully completed the project:

Completed in 105.5s (32 steps, $0.1402)
Pass rate: 1/1 (100.0%)

Checklist

• Tests pass locally
• Code follows project style guidelines
• Documentation updated (if needed)

[xuafeng]

Overall is great. I left 2 comments for id.

[tareknaser]

Looks good overall. approved. I left two minor comments but it’s up to you whether you want to address them

[tareknaser]

Thank you

[Copilot]

Pull request overview

This PR adds the CS537 Spring 2019 "Processes Shell" project to the courselab benchmark suite. The project tasks students with building a simple Unix shell (called wish) that supports basic features like command execution, built-in commands (exit, cd, path), I/O redirection, and parallel command execution.

Key changes:

• Adds project specification, preprocessing, evaluation scripts, and configuration for the CS537 processes shell project
• Registers the new CS537 Spring 2019 course in the courses registry
• Includes unrelated courseexam_bench additions (exam questions, metadata, and reference materials)

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
benchmarks/courselab_bench/data/cs537-projects-spring-2019/processes_shell/task.md	Complete project specification describing shell implementation requirements
benchmarks/courselab_bench/data/cs537-projects-spring-2019/processes_shell/preprocess.sh	Script to checksum protected test files before student execution
benchmarks/courselab_bench/data/cs537-projects-spring-2019/processes_shell/evaluate.sh	Script to verify file integrity, build the shell, and run tests
benchmarks/courselab_bench/data/cs537-projects-spring-2019/processes_shell/config.json	Configuration specifying Docker image, timeout, tags, and output files
benchmarks/courselab_bench/data/courses.json	Adds CS537 Projects Spring 2019 course entry
benchmarks/courseexam_bench/data/reference_materials/raft_basics.md	New Raft reference material (unrelated to processes shell)
benchmarks/courseexam_bench/data/questions.jsonl	New CS537 Fall 2021 exam questions (unrelated to processes shell)
benchmarks/courseexam_bench/data/exams_metadata.json	New exam metadata (unrelated to processes shell)

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[xuafeng]

Looks great to me.