Compute a cheap, uncached completion percentage per course (completed
lessons / media files) and surface it as a badge + thin progress bar on
library cards in both list and grid view, and in search results - untouched
courses stay unbadged so the list doesn't get noisy with "0%".
Replace the native alert() dialogs used for bulk-select validation and
course-load errors with a small slide-in toast component that matches the
rest of the UI instead of a jarring browser popup.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
rmsitzandClaude Sonnet 5
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