feat: Windows隐藏启动控制台，关闭按钮改为隐藏到托盘

- CMakeLists.txt: Windows 使用 add_executable WIN32 构建 GUI 程序（无控制台）
- closeEvent: 点击关闭按钮隐藏到托盘而非退出程序
- 托盘菜单已有"显示主窗口"和双击恢复功能

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

CMakeLists.txt

@@ -139,9 +139,16 @@ else()
     list(APPEND HEADERS src/core/caps_lock_voice_hotkey.h src/core/wayland_text_injector.h)
     add_compile_definitions(PLATFORM_LINUX)
 endif()
-add_executable(${PROJECT_NAME} ${SOURCES} ${HEADERS}
-    src/ui/resources/styles/styles.qrc
-)
+# Windows 使用 WIN32 标志隐藏启动控制台
+if(WIN32)
+    add_executable(${PROJECT_NAME} WIN32 ${SOURCES} ${HEADERS}
+        src/ui/resources/styles/styles.qrc
+    )
+else()
+    add_executable(${PROJECT_NAME} ${SOURCES} ${HEADERS}
+        src/ui/resources/styles/styles.qrc
+    )
+endif()
 
 target_include_directories(${PROJECT_NAME} PRIVATE
     ${CMAKE_CURRENT_SOURCE_DIR}/src

src/ui/main_window.cpp

@@ -194,9 +194,10 @@ void MainWindow::loadStyleSheet() {
 }
 
 void MainWindow::closeEvent(QCloseEvent* event) {
-    LOG_INFO(kTag, "主窗口关闭");
-    doExit();
-    QMainWindow::closeEvent(event);
+    // 关闭按钮隐藏到托盘，不退出程序
+    LOG_INFO(kTag, "主窗口隐藏到托盘");
+    hide();
+    event->ignore();
 }
 
 void MainWindow::doExit() {