- LibraryFilter: word search on names; muscle (primary), equipment and
level choices that widen within a filter and narrow across filters
- ExerciseBrowser (reusable for the Plan picker) with search field,
filter sheets showing live result counts, a clear button and an
empty state
- Exercise detail: start/end Flip Animation at each Mode's pace (still
with reduced motion), facts, main/secondary muscles, numbered steps
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>