Short press will go back to origin / long press will go back to home

src/activities/reader/TxtReaderActivity.cpp

@@ -117,16 +117,16 @@ void TxtReaderActivity::onExit() {
 }
 
 void TxtReaderActivity::loop() {
-  // Long press BACK (1s+) goes to file selection
+  // Long press BACK (1s+) goes to home screen
   if (mappedInput.isPressed(MappedInputManager::Button::Back) && mappedInput.getHeldTime() >= ReaderUtils::GO_HOME_MS) {
-    activityManager.goToFileBrowser(txt ? txt->getPath() : "");
+    onGoHome();
     return;
   }
 
-  // Short press BACK goes directly to home
+  // Short press BACK returns to the calling activity
   if (mappedInput.wasReleased(MappedInputManager::Button::Back) &&
       mappedInput.getHeldTime() < ReaderUtils::GO_HOME_MS) {
-    onGoHome();
+    finish();
     return;
   }
 
@@ -143,7 +143,7 @@ void TxtReaderActivity::loop() {
       currentPage++;
       requestUpdate();
     } else {
-      onGoHome();
+      finish();
     }
   }
 }