Various improvements (#614)

- Auto-select widgets in Launcher and apps with toolbars on devices without touch.
- Improved USB HID input reliability, cleanup
- Updated PSRAM settings to improve boot stability on supported devices.
- Prevented duplicate Wi-Fi event subscriptions during screen rebuilds.
- Updated docs
- Fixes in WifiManage and WifiConnect
- Reduced main task stack size
- Moved USB HID stack size to PSRAM when available
- app_manager_find_manifest() now returns a copy instead of a pointer

Tactility/Source/app/wifimanage/View.cpp

@@ -323,10 +323,23 @@ void View::init(uint32_t newAppInstanceId, lv_obj_t* parent) {
 }
 
 void View::update() {
+    if (root == nullptr) {
+        // Buried (or not yet built) - see reset().
+        return;
+    }
     updateWifiToggle();
     updateScanning();
     updateNetworkList();
     updateConnectToHidden();
 }
 
+void View::reset() {
+    root = nullptr;
+    enable_switch = nullptr;
+    enable_on_boot_switch = nullptr;
+    scanning_spinner = nullptr;
+    networks_list = nullptr;
+    connect_to_hidden = nullptr;
+}
+
 } // namespace