- Tail is now computed and applied per-row instead of globally.
- Right-side-only tail padding so item positions don't shift when tail grows.
- Removed anchor-row clamping from effectiveAnchorOffset and targetOffset;
each row independently clamps the shared virtual offset.
- Rows that fit entirely on screen (maxOffset == 0) keep left alignment.
- Short rows retain their scrolled position when focus moves to longer rows.
Fixes erratic scrolling and zig-zag when navigating across rows of different
lengths in movie/series/search categories.
LeoVasanko
eee8c973ed