chore: gitignore Flutter generated plugin registrants

Remove auto-generated plugin registrant files from tracking and add
them to .gitignore. These are regenerated by flutter pub get.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/flutter/.gitignore

@@ -27,12 +27,21 @@ migrate_working_dir/
 **/doc/api/
 **/ios/Flutter/.last_build_id
 .dart_tool/
+.flutter-plugins
 .flutter-plugins-dependencies
 .pub-cache/
 .pub/
 /build/
 /coverage/
 
+# Generated plugin registrants
+**/windows/flutter/generated_plugin_registrant.cc
+**/windows/flutter/generated_plugin_registrant.h
+**/windows/flutter/generated_plugins.cmake
+**/linux/flutter/generated_plugin_registrant.cc
+**/linux/flutter/generated_plugin_registrant.h
+**/linux/flutter/generated_plugins.cmake
+
 # Symbolication related
 app.*.symbols
 

apps/flutter/windows/flutter/generated_plugin_registrant.cc

@@ -1,17 +0,0 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#include "generated_plugin_registrant.h"
-
-#include <screen_retriever_windows/screen_retriever_windows_plugin_c_api.h>
-#include <window_manager/window_manager_plugin.h>
-
-void RegisterPlugins(flutter::PluginRegistry* registry) {
-  ScreenRetrieverWindowsPluginCApiRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("ScreenRetrieverWindowsPluginCApi"));
-  WindowManagerPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("WindowManagerPlugin"));
-}

apps/flutter/windows/flutter/generated_plugin_registrant.h

@@ -1,15 +0,0 @@
-//
-//  Generated file. Do not edit.
-//
-
-// clang-format off
-
-#ifndef GENERATED_PLUGIN_REGISTRANT_
-#define GENERATED_PLUGIN_REGISTRANT_
-
-#include <flutter/plugin_registry.h>
-
-// Registers Flutter plugins.
-void RegisterPlugins(flutter::PluginRegistry* registry);
-
-#endif  // GENERATED_PLUGIN_REGISTRANT_

apps/flutter/windows/flutter/generated_plugins.cmake

@@ -1,25 +0,0 @@
-#
-# Generated file, do not edit.
-#
-
-list(APPEND FLUTTER_PLUGIN_LIST
-  screen_retriever_windows
-  window_manager
-)
-
-list(APPEND FLUTTER_FFI_PLUGIN_LIST
-)
-
-set(PLUGIN_BUNDLED_LIBRARIES)
-
-foreach(plugin ${FLUTTER_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/windows plugins/${plugin})
-  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
-endforeach(plugin)
-
-foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
-  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/windows plugins/${ffi_plugin})
-  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
-endforeach(ffi_plugin)