feat(quickmenu): comprehensive quick menu enhancements

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

src/activities/reader/EpubReaderActivity.cpp

@@ -496,6 +496,28 @@ void EpubReaderActivity::loop() {
               self->onGoToClearCache();
               return;
             }
+            self->updateRequired = true;
+          } else if (action == QuickMenuAction::TOGGLE_ORIENTATION) {
+            // Toggle between Portrait and Landscape CCW
+            if (SETTINGS.orientation == CrossPointSettings::ORIENTATION::PORTRAIT) {
+              SETTINGS.orientation = CrossPointSettings::ORIENTATION::LANDSCAPE_CCW;
+            } else {
+              SETTINGS.orientation = CrossPointSettings::ORIENTATION::PORTRAIT;
+            }
+            SETTINGS.saveToFile();
+
+            // Apply new orientation to renderer
+            if (SETTINGS.orientation == CrossPointSettings::ORIENTATION::PORTRAIT) {
+              self->renderer.setOrientation(GfxRenderer::Orientation::Portrait);
+            } else {
+              self->renderer.setOrientation(GfxRenderer::Orientation::LandscapeCounterClockwise);
+            }
+
+            // Force section reload with new orientation's viewport dimensions
+            xSemaphoreTake(cachedMutex, portMAX_DELAY);
+            self->section.reset();
+            xSemaphoreGive(cachedMutex);
+
             self->updateRequired = true;
           } else if (action == QuickMenuAction::GO_TO_SETTINGS) {
             // Navigate to Settings activity