Booklight 0.2.0

Added

• The Books home layout on all three platforms — a source-list
  sidebar (home / smart groups: want-to-read, finished, PDF, EPUB /
  my collections with creation) over a home digest (continue-reading
  and recently-added cover strips) or the cover grid for the selected
  scope. Closing the last book returns to the shelf.
• Tools menu, all platforms: watermark baking (text / size /
  opacity), export the current page as an image, export the document
  text as .txt — alongside page surgery and AcroForm filling.
• Interface language setting (follow system / 中文 / English).

Changed

• All-white reading chrome — every surface uses Apple semantic
  colors; the terracotta accent is reserved for interactive elements.
  Dark mode follows the system.
• The reading timer from the early shelf build is gone — not this
  product's story.

Fixed

• Windows: the update flow can no longer wedge the app (poller rides
  out transient RPC errors; installs only end the old process after
  the new one is confirmed running); SIGTERM works again.