2.9.14

Dual-Language Reader (Translation Book)

A split-screen mode for reading a book alongside its translation in another language.

Split-screen view — opens a secondary ッツ reader panel below the primary book
Draggable divider — drag the divider bar up/down to adjust the split ratio (20%–80%), ratio persisted per book
Translation book toggle — dedicated button on the audio toolbar (between progress slider and menu) to show/hide the secondary panel
Menu integration — "Set translation book" / "Change translation book" menu items with book title display and "Tap to change" subtitle
Automatic title formatting — translation book is renamed to "Primary ⇨ Translation" format (e.g. "Erfolg ⇨ Success") in both the ッツ reader book list and the app's reader history
Sort order preserved — translation book's lastBookOpen is set to 0 so the primary book always appears first in book lists
Per-book persistence — translation book URL, title, and split ratio saved per primary book via Hive, restored on reopen
Reading position persistence — auto-bookmark enabled in the secondary reader, so translation book position is saved independently
Dictionary isolation — text selection in the translation book does not trigger dictionary lookups

Removed hardcoded Tailwind padding (py-8, px-4, md:px-8) from the ッツ reader's book container via CSS injection, eliminating the ~5% margins on all sides in both primary and secondary readers

Secondary WebView shares the same ッツ reader server (same port), so imported books are available in both panels
Book URL detection handles SPA navigation (/b?id=) by converting to direct-loadable format (/b.html?id=) before saving
Book title extracted from ッツ reader's formatPageTitle output ("Title | ッツ Ebook Reader" → "Title")
CSS margin fix uses ID-checked style injection in both onLoadStop and onTitleChanged to survive SPA navigation
IndexedDB title rename guarded by ⇨ check to prevent re-renaming on subsequent opens