port: upstream PR #1342 - Book Info screen, richer metadata, safer controls

Ports upstream PR #1342 (feat: Add Book Info screen, richer metadata,
and safer file-browser controls) with mod-specific adaptations:

- Parse and cache series, seriesIndex, description from EPUB OPF
- Bump book.bin cache version to 6 for new metadata fields
- Add BookInfoActivity (new screen) accessible via Right button in FileBrowser
- Add ManageBook menu via Left button in FileBrowser (replaces upstream hidden delete)
- Guard all delete/archive actions with ConfirmationActivity (10 call sites)
- Add inputArmed gating to ConfirmationActivity to prevent accidental confirmation
- Safe deserialization: readString now returns bool with MAX_STRING_LENGTH guard
- Add series field to RecentBooksStore with JSON and binary serialization
- Add i18n keys: STR_BOOK_INFO, STR_AUTHOR, STR_SERIES, STR_FILE_SIZE, etc.

Made-with: Cursor

src/activities/reader/EpubReaderMenuActivity.cpp

@@ -68,8 +68,7 @@ void EpubReaderMenuActivity::loop() {
 
   // Long-press Confirm on orientation item opens the sub-menu
   if (!orientationSubMenuOpen && mappedInput.isPressed(MappedInputManager::Button::Confirm) &&
-      mappedInput.getHeldTime() >= longPressMs &&
-      menuItems[selectedIndex].action == MenuAction::TOGGLE_ORIENTATION) {
+      mappedInput.getHeldTime() >= longPressMs && menuItems[selectedIndex].action == MenuAction::TOGGLE_ORIENTATION) {
     orientationSubMenuOpen = true;
     ignoreNextConfirmRelease = true;
     orientationSubMenuIndex = pendingOrientation;
@@ -146,7 +145,8 @@ void EpubReaderMenuActivity::loop() {
       return;
     }
 
-    setResult(MenuResult{static_cast<int>(selectedAction), pendingOrientation, selectedPageTurnOption, pendingFontSize});
+    setResult(
+        MenuResult{static_cast<int>(selectedAction), pendingOrientation, selectedPageTurnOption, pendingFontSize});
     finish();
     return;
   } else if (mappedInput.wasReleased(MappedInputManager::Button::Back)) {
@@ -176,8 +176,7 @@ void EpubReaderMenuActivity::render(RenderLock&&) {
   if (orientationSubMenuOpen) {
     const char* subTitle = tr(STR_TOGGLE_ORIENTATION);
     const int subTitleX =
-        contentX +
-        (contentWidth - renderer.getTextWidth(UI_12_FONT_ID, subTitle, EpdFontFamily::BOLD)) / 2;
+        contentX + (contentWidth - renderer.getTextWidth(UI_12_FONT_ID, subTitle, EpdFontFamily::BOLD)) / 2;
     renderer.drawText(UI_12_FONT_ID, subTitleX, 15 + contentY, subTitle, true, EpdFontFamily::BOLD);
 
     constexpr int lineHeight = 35;