0.6.3

[0.6.3] - 2026-07-18

Added

• Fixed-layout EPUBs can be read as facing-page spreads. The new
  表示 → 固定レイアウトを見開き表示 option is enabled by default and honors
  the book's left/right page-progression direction plus page-spread-*
  placement metadata. Clicking the outer 15% of either page also turns the
  spread in the corresponding physical direction. The first spine page is
  always treated as a cover and shown alone. Binding direction can be set to
  automatic, right-bound, or left-bound; automatic uses right binding for
  vertical writing and otherwise follows the EPUB.

Fixed

• Fixed-layout arrow navigation turns the page on the first key press.
  Left/Right are intercepted before Chromium can use the first press to
  horizontally scroll an oversized page. The complete fixed page is fitted to
  the reading pane while retaining its authored aspect ratio. Books that omit
  rendition:layout are also recognized when every spine document is exactly
  one image page with no surrounding text.
• Single-image chapters now always open fitted to the reading pane. The
  source image's aspect ratio determines whether its width or height meets the
  window edge, independently of the retained text zoom. Image zoom and mouse
  drag panning now use the image's actual bounds, avoiding scrollable empty
  space on the non-overflowing axis.
• Book-search results now jump to the selected occurrence. Repeated matches
  in the same chapter use their stored text offsets instead of always opening
  Chromium's first match. Pressing Enter in the search field opens the first
  result immediately.