Remove .backup files from version control (#25)

* Added test_api.py

* Remove .backup files from version control

These backup files should remain local only and not be tracked in git. The .gitignore already includes *.backup pattern to prevent future backup files from being committed.

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Co-Authored-By: Claude <noreply@anthropic.com>

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Co-authored-by: Claude <noreply@anthropic.com>

Author: karthiknitt