Initial Release - CC BY 4.0 Flickr Attribution Generator

First public release of the CC BY 4.0 Flickr Attribution Generator.
✅ Generates proper HTML attribution for Flickr images licensed under CC BY 4.0 International.
✅ Live image preview and attribution snippet.
✅ Full HTML block output with easy "Copy to Clipboard" button.
✅ Built-in warning for All Rights Reserved images.

Requires your own Flickr API key.