Moved clipboard functions (copyToClipboard, fallbackCopy, showCopyFeedback)
inside IIFE scope for proper closure access. Edge browser is stricter than
Firefox about scope resolution - functions must be in same scope as event
listeners that call them.
Previously these functions were in global scope while event listeners were
in IIFE scope, which worked in Firefox but failed silently in Edge.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Ivo Oskamp
2e0baa4e35