chore: remove face images from tracking and gitignore image folders

[Copilot]

Summary

Face images of real people were committed to the public repo. This removes them from git tracking and prevents future commits via .gitignore.

Type of Change

• Bug fix
• New feature
• Refactor / code quality
• Documentation update
• Other: privacy / repo hygiene

Changes Made

• Added ImagesAttendance/ and images/ to .gitignore — face data should be supplied locally, never committed
• Ran git rm --cached -r on both folders to untrack the 30 existing image files without deleting them locally

Note: Images are removed going forward only; they remain in git history. A git filter-repo pass is needed to fully purge history.

Testing

• Existing tests pass (pytest tests/ -v)
• New tests added for new functionality
• Manually tested with webcam

Checklist

• Code follows the project style (PEP 8, max line length 120)
• README updated if behaviour changed
• CHANGELOG.md updated under [Unreleased]