Quick Menu UI Improvements:
- Add navigation button hints (prev/next on front buttons, up/down on side buttons)
- Fix orientation-aware margins for button hint areas in landscape modes
Screen Rotation Toggle:
- Add "Rotate Screen" option to toggle between Portrait and Landscape CCW
- Force section reindex when orientation changes to properly reflow content
- Position is automatically restored via content offset after reindex
Customizable Menu Order:
- Add "Edit List Order" option (fixed at bottom of menu)
- Pick-and-place reordering: select item to move, navigate to destination, place
- Visual feedback: filled highlight for cursor, outlined box for item being moved
- Menu order persists in settings (quickMenuOrder array in CrossPointSettings)
- New default order: Bookmark, Dictionary, Rotate Screen, Settings, Clear Cache
Files changed:
- CrossPointSettings.h: Add quickMenuOrder[5] setting
- QuickMenuActivity.h/cpp: Edit mode, order rendering, pick-and-place logic
- EpubReaderActivity.cpp: Handle TOGGLE_ORIENTATION action with section reset
On ESP32-C3 with USB CDC, Serial.printf() blocks indefinitely when USB
is not connected. This caused device freezes when booted without USB.
Solution: Call Serial.setTxTimeoutMs(0) after Serial.begin() to make
all Serial output non-blocking.
Also added if (Serial) guards to high-traffic logging paths in
EpubReaderActivity as belt-and-suspenders protection.
Includes documentation of the debugging process and Serial call inventory.
Also applies clang-format to fix pre-existing formatting issues.
