fix: airfoil optimize bugs

[cashend]

Description

This branch fixes some recently added bugs in airfoil optimize, and makes changes to the airfoil SLURM optimization tooling:

1. Bug fixes in simulate_jobs.py (optimize_slurm): Fixes to TMPDIR (relevant to running on HPC), Mach argument passing typo, and opt_alpha extraction that were causing incorrect behavior in the optimizer.

2. New script (dataset_slurm_airfoil_optimize.py): Adds a dataset generation script (now tested) that runs the aerodynamic optimizer over a grid of starting designs and sampled flow conditions (Mach, Reynolds, angle of attack) using SLURM job arrays.

3. Changes to conventional-commits checking behavior (pre-commit.yaml) : The conventional-commit-lint check was using base.sha, which resolves to the merge-base commit and can include historical commits from main that predate this repo's adoption of conventional commits. Changed to use origin/main instead, so only commits not yet in main are linted.

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files
• I have run ruff check . and ruff format
• I have run mypy .
• I have commented my code, particularly in hard-to-understand areas
• [N/A] I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes