Version 3.7 send to AppStore (page curl, japanese fix)

[petrjahoda]

■ New features
- Turn EPUB pages with an Apple Books-style page curl. A real paper-fold animation, switch it on in Settings.
- Send books straight to your PocketBook: email any book to your @pbsync.com address, just like Send to Kindle.
- Import custom fonts from a ZIP archive. A whole family with all its weights and styles lands in one step.
- New "Recently Changed" library sort orders books by when their file last changed on disk.

■ Improvements
- The free trial is now 14 days (up from 7).
- Refreshed app icon with a new purple gradient and dedicated light and dark versions.
- New "Multiple libraries" help topic: keep several book folders side by side and switch between them without losing files or progress.

■ Fixes
- Imported fonts now show every weight and style right away, instead of only Regular until the next relaunch.
- Fixed Japanese vertical writing (tategaki): vertical-text EPUBs now lay out and turn pages correctly.

■ Accessibility
- Send to Kindle and Send to PocketBook are now reachable from the VoiceOver Actions rotor on Home cards and Search results, not just long-press.
- Clear-email buttons in Settings enlarged to a full 44pt touch target.
- Page curl now respects Switch Control, VoiceOver, and Reduce Motion, restoring normal page turning when toggled mid-book.

■ Localization
- All the newly added text is natively translated across all supported languages.