Remove obsolete TODO comments and clarify code

Clean up outdated TODO comments that are no longer relevant and improve comment clarity in activity classes and parsers.

src/activities/network/NetworkModeSelectionActivity.cpp

@@ -51,7 +51,6 @@ void NetworkModeSelectionActivity::loop() {
     return;
   }
 
-  // Handle navigation
   buttonNavigator.onNext([this] {
     selectedIndex = ButtonNavigator::nextIndex(selectedIndex, MENU_ITEM_COUNT);
     requestUpdate();
@@ -86,7 +85,6 @@ void NetworkModeSelectionActivity::render(RenderLock&&) {
       [](int index) { return std::string(I18N.get(menuItems[index])); },
       [](int index) { return std::string(I18N.get(menuDescs[index])); }, [](int index) { return menuIcons[index]; });
 
-  // Draw help text at bottom
   const auto labels = mappedInput.mapLabels(tr(STR_BACK), tr(STR_SELECT), tr(STR_DIR_UP), tr(STR_DIR_DOWN));
   GUI.drawButtonHints(renderer, labels.btn1, labels.btn2, labels.btn3, labels.btn4);
 

src/activities/network/WifiSelectionActivity.cpp

@@ -463,7 +463,6 @@ void WifiSelectionActivity::loop() {
       }
     }
 
-    // Handle navigation
     buttonNavigator.onNext([this] {
       selectedNetworkIndex = ButtonNavigator::nextIndex(selectedNetworkIndex, networks.size());
       requestUpdate();