Merge origin/main into cursor/library-multiple-file-upload-6955

Commit notes

Resolved conflict in LibrarySearchFilter.svelte: - Kept upload button and hidden file input from feature branch - Applied viewport fix classes from main (min-w-0 flex-shrink) - Added flex-shrink-0 to upload button for consistent sizing

Co-authored-by: armin.naimi <[email redacted]>