feat: mobile-like window size and always-visible stats

- Changed window size to mobile phone format (400x800)
- Removed width condition for ActiveProxyFooter - now always visible
- Added run-umbrix.sh launch script with icon copying
- Stats cards now display on all screen sizes

linux/flutter/generated_plugin_registrant.cc

@@ -7,6 +7,7 @@
 #include "generated_plugin_registrant.h"
 
 #include <dynamic_color/dynamic_color_plugin.h>
+#include <open_file_linux/open_file_linux_plugin.h>
 #include <screen_retriever/screen_retriever_plugin.h>
 #include <sentry_flutter/sentry_flutter_plugin.h>
 #include <sqlite3_flutter_libs/sqlite3_flutter_libs_plugin.h>
@@ -18,6 +19,9 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) dynamic_color_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "DynamicColorPlugin");
   dynamic_color_plugin_register_with_registrar(dynamic_color_registrar);
+  g_autoptr(FlPluginRegistrar) open_file_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "OpenFileLinuxPlugin");
+  open_file_linux_plugin_register_with_registrar(open_file_linux_registrar);
   g_autoptr(FlPluginRegistrar) screen_retriever_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "ScreenRetrieverPlugin");
   screen_retriever_plugin_register_with_registrar(screen_retriever_registrar);