feat(reader): radical UI simplification — only 5 tools, no overflow menu
- epubOverflowMenuSections: removed CUSTOMIZE_TOOLBAR, HIDDEN_TOOLS,
TAP_TO_TURN, VOLUME_SCROLL, PAGE_TURN_ANIM, KEEP_SCREEN_ON,
VISUAL_OPTIONS, AUTO_SCROLL, TTS_SETTINGS, BOOK_REPLACEMENTS, FILE_INFO
- defaultReaderHiddenTools: hide everything except THEME, SLIDER, TOC,
BOOKMARK, READING_MODE
- defaultReaderToolOrder: only THEME, TOC, SLIDER (top bar)
- defaultReaderBottomTools: only SLIDER, TOC (bottom bar)
- loadHiddenTools: merge new defaults into saved prefs on upgrade
- Result: reader shows only font/theme, navigation slider, chapters (TOC),
bookmark, reading mode — like Myne/Book's Story
- ':app:assembleOssDebug' passes, APK deployed.
9e0ac90613