Potential fixes for 5 code quality findings

[ajm19826]

This PR applies 5/5 suggestions from code quality AI findings.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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Scanned Files

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[mathsite]

more code cleanup

[gemini-code-assist]

Code Review

This pull request improves math-page.html by renaming the 'warp-buttons' class to 'grade-navigation-buttons' for better semantic clarity, fixing broken and misspelled URLs for math lessons, and adding descriptive alt text to placeholder images. A review comment points out that the refactoring of the navigation section is incomplete, as the 'Warp to Grade' heading and the 'warp-buttons-container' ID remain unchanged, which creates naming inconsistencies.

[gemini-code-assist]

While changing the class name to grade-navigation-buttons improves semantic clarity, the refactoring is incomplete. The surrounding elements still use the old 'warp' terminology, such as the h2 text 'Warp to Grade:' (line 216) and the ID warp-buttons-container (line 217). This creates an inconsistency that could be confusing for future maintenance. For better consistency, consider renaming these as well. Note that changing the ID will also require an update to the corresponding JavaScript.

[khalid-ameri]

can you rename

[mathsite]

done