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feat: Implement data export features (Issue #15)#17

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NithinRegidi wants to merge 2 commits intomultiverseweb:mainfrom
NithinRegidi:feature/issue-15-data-export
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feat: Implement data export features (Issue #15)#17
NithinRegidi wants to merge 2 commits intomultiverseweb:mainfrom
NithinRegidi:feature/issue-15-data-export

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@NithinRegidi
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Issue #15: Implement Data Export Features

What's New

  • Export charts as PNG images using html2canvas
  • Export data as CSV files using PapaParse
  • Export data as JSON files with metadata
  • Export buttons on all charts and dropdown above data table
  • Filename format: chart_[name]_YYYY-MM-DD.png, data_YYYY-MM-DD.csv/json

Technical Changes

  • Added 3 CDN libraries (html2canvas, PapaParse, FileSaver)
  • 5 new export functions with error handling
  • Complete CSS styling for export UI
  • Responsive design with dark mode support

Testing

  • Chart export buttons appear after data load
  • PNG/CSV/JSON downloads work correctly
  • Error handling for missing libraries
  • Mobile responsive design

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🎉 Thank you for your contribution! Your pull request has been submitted successfully. A maintainer from will review it soon. We appreciate your support in making better.

@NithinRegidi
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@multiverseweb Please review this PR

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