android / Build + lint + test (push) Successful in 3m54s
Two findings, both fair: LibraryScreen was one line over the 60-line cap once Genres and Years were added to its pager. Split the page bodies into LibraryTabPage, so the screen is the scaffold and tab bar while the routing table lives on its own -- adding a tab is now one line there and one label in LIBRARY_TABS, rather than growing a function that was already at its limit. The decade arithmetic used a bare 10 twice. Named it YEARS_PER_DECADE: floor-to-decade reads as arbitrary without it.