Version 2.6 sent to AppStore (Readwise)

[petrjahoda]

New Features
- Readwise Highlight Export: connect a Readwise account once in Settings, then push every highlight from any book with a single "Export all highlights" button, includes title, author, chapter, page, and your notes

Improvements
- Author surname highlighting in Library: lastnames are now bolded on book cards, with proper handling of multi-word surnames, suffixes, and non-Latin scripts
- Font weight slider: fixed broken slider on reflowable EPUBs: now resolves fonts by family name and falls back cleanly when a weight isn't installed

Localization
- All new 41 strings translated across 15 languages