- The streaming assembler applied chunks sorted by position, so header
patches written last could be overwritten by earlier data. Chunks now
apply in arrival order (newest write wins per byte range) and are only
laid out by position afterwards.
- The Optimize modal now reads the media metadata itself: both previews
show resolution and duration, and the processed video is flagged in red
when it comes out shorter than the original (a truncated encode is no
longer something you have to guess by file size).