fix: resolve mod build errors after upstream sync

- Update open-x4-sdk submodule to 9f76376 (BatteryMonitor ESP-IDF 5.x compat)
- Add RTC_NOINIT bounds check for logHead in Logging.cpp
- Add drawTextRotated90CCW to GfxRenderer for dictionary UI
- Add getWordXpos() accessor to TextBlock for dictionary word selection
- Fix bare include paths (ActivityResult.h, RenderLock.h) across 10 files
- Fix rvalue ref binding in setResult() lambdas (std::move pattern)
- Fix std::max type mismatch (uint8_t vs int) in EpubReaderActivity
- Fix FsFile forward declaration conflict in Dictionary.h
- Restore StringUtils::checkFileExtension() and sortFileList()
- Restore RecentBooksStore::removeBook()

Made-with: Cursor

lib/Epub/Epub/blocks/TextBlock.h

@@ -28,6 +28,7 @@ class TextBlock final : public Block {
   void setBlockStyle(const BlockStyle& blockStyle) { this->blockStyle = blockStyle; }
   const BlockStyle& getBlockStyle() const { return blockStyle; }
   const std::vector<std::string>& getWords() const { return words; }
+  const std::vector<int16_t>& getWordXpos() const { return wordXpos; }
   bool isEmpty() override { return words.empty(); }
   size_t wordCount() const { return words.size(); }
   // given a renderer works out where to break the words into lines