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

.claude/rules/key-conventions.md

@@ -0,0 +1,8 @@
+# Key Conventions
+
+- Shared cross-platform code uses `#ifdef ESP_PLATFORM` for ESP32-specific paths.
+  Code in `Platforms/PlatformEsp32/` is already ESP-only and does not need guards around ESP-IDF includes.
+- The `Drivers/` directory contains hardware drivers (display controllers, touch controllers, PMICs, etc.) — each is its own CMake component.
+- `Modules/` contains cross-cutting modules. e.g.`lvgl-module` (LVGL task management).
+- `Data/system/` and `Data/data/` are flashed as FAT filesystem images on ESP32.
+- Translations are in `Translations/` as CSV files, generated via `generate.py`.