feat: add print_script option to SlurmExecutor

[ko3n1g]

Summary

• Adds print_script: bool = False field to SlurmExecutor
• When True, the generated sbatch script is printed to stdout after materialization in _submit_dryrun(), for both dryrun and real submissions
• Enables users to inspect, copy-paste, or pipe the script directly to sbatch without the NeMo Run dependency

Motivation

Currently dryrun=True logs the script via the Rich console, but there is no clean way to get plain text to stdout for scripting. This option makes it easy to reproduce a job standalone:

executor = SlurmExecutor(..., print_script=True)
run.run(task, executor, dryrun=True)  # prints sbatch script to stdout

or pipe directly:

python my_job.py | sbatch

Test plan

• test_submit_dryrun_print_script — verifies #!/bin/bash appears in stdout when print_script=True
• test_submit_dryrun_no_print_by_default — verifies stdout is empty when print_script=False (default)
• Full test suite passes: uv run -- pytest test/

🤖 Generated with Claude Code