Refactored events (#621)

Event handling:

- Added unified event handling for application, system, and Wi‑Fi events.
- Updated all apps to reflect event handling changes

Wi-Fi:

- Refactored event handling from listener interface to task & event group.
- Added direct Wi‑Fi radio controls and improved event subscriptions.
- Wi‑Fi screens now refresh asynchronously and handle unavailable devices more gracefully.
- Enabled Wi‑Fi by default on in dts files, but radio on/off is still done by code. The main reason was reliable event subscription and consistent devicetree states.
- Improved Wi‑Fi shutdown cleanup and radio-state handling.

Other:
- Renamed the Kernel Display app to Display.

Modules/app-module/source/symbols.cpp

@@ -8,6 +8,7 @@
 
 #include <service/manager.h>
 
+#include <tactility/concurrent/task_event_group.h>
 #include <tactility/error.h>
 #include <tactility/module.h>
 
@@ -18,9 +19,10 @@ extern ServiceManifest app_internal_loader_service_manifest;
 const ModuleSymbol app_module_symbols[] = {
     // app/event
     DEFINE_MODULE_SYMBOL(app_event_subscribe),
+    DEFINE_MODULE_SYMBOL(app_event_subscribe_with_app_id),
     DEFINE_MODULE_SYMBOL(app_event_unsubscribe),
     DEFINE_MODULE_SYMBOL(app_event_emit),
-    DEFINE_MODULE_SYMBOL(app_event_await),
+    DEFINE_MODULE_SYMBOL(app_event_poll),
     // app/install
     DEFINE_MODULE_SYMBOL(app_get_install_path),
     DEFINE_MODULE_SYMBOL(app_install),