[eharriett0]

Description

Add .DS_Store to .gitignore so macOS Finder's directory-metadata files don't get accidentally staged.

Motivation and Context

macOS Finder writes a .DS_Store file into every directory it browses. On a contributor's Mac these can easily slip into git add -A / git add . and end up committed. Ignoring them repo-wide is the standard fix and matches what most Python projects do.

Types of changes

• Build or continuous integration change

Checklist:

• I have read the contribution guide.
• My code follows the code style of this project.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.95%. Comparing base (06f40c2) to head (e17d029).

Additional details and impacted files

@@             Coverage Diff             @@
##              main    #1733      +/-   ##
===========================================
- Coverage   100.00%   98.95%   -1.05%     
===========================================
  Files           71       71              
  Lines        23921    23921              
===========================================
- Hits         23921    23671     -250     
- Misses           0      250     +250     

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