v14.117.0 — Scroll past selection + flashing fix

Fixed

• Cannot scroll past the last selection — move_down/move_up now advances
  the viewport offset even when the selection is at the first or last file,
  allowing you to scroll past the visible selection boundary.
• Screen flashing on remote→local navigation — Sidebar navigation no longer
  synchronously clears the file list before sending RefreshFiles. The async
  refresh now replaces files atomically, eliminating the empty-frame blink.

Install: cargo install tiles-tui-file-manager