chore: 迁移 Qt6 到 Qt5

- find_package(Qt6 ...) -> find_package(Qt5 ...)
- 移除 qt_standard_project_setup() (Qt5 无此函数)
- qt_add_resources -> qt5_add_resources + .qrc 资源文件
- QTextStream::setEncoding(QStringConverter::Utf8) -> setCodec("UTF-8")
  (3 个 tokenizer 文件 + logger.cpp)
- 更新 tests/CMakeLists.txt 使用 Qt5::Core

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CMakeLists.txt

@@ -27,18 +27,16 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 # ============================================================================
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
-# Qt 6
-find_package(Qt6 REQUIRED COMPONENTS Core Widgets Concurrent Network)
+# Qt 5
+find_package(Qt5 REQUIRED COMPONENTS Core Widgets Concurrent Network)
 
 # Windows 不需要 D-Bus，Linux/macOS 按需加载
 if(WIN32)
-    find_package(Qt6 REQUIRED COMPONENTS Gui)
+    find_package(Qt5 REQUIRED COMPONENTS Gui)
 else()
-    find_package(Qt6 REQUIRED COMPONENTS DBus)
+    find_package(Qt5 REQUIRED COMPONENTS DBus)
 endif()
 
-qt_standard_project_setup()
-
 # ONNX Runtime
 include(dependencies)
 
@@ -150,12 +148,12 @@ target_include_directories(${PROJECT_NAME} PRIVATE
 )
 
 target_link_libraries(${PROJECT_NAME} PRIVATE
-    Qt6::Core
-    Qt6::Widgets
-    Qt6::Concurrent
-    Qt6::Network
-    $<$<BOOL:${WIN32}>:Qt6::Gui>
-    $<$<NOT:$<BOOL:${WIN32}>>:Qt6::DBus>
+    Qt5::Core
+    Qt5::Widgets
+    Qt5::Concurrent
+    Qt5::Network
+    $<$<BOOL:${WIN32}>:Qt5::Gui>
+    $<$<NOT:$<BOOL:${WIN32}>>:Qt5::DBus>
     ${ONNXRUNTIME_LIBRARIES}
     ${PORTAUDIO_LIBRARIES}
     $<$<NOT:$<BOOL:${WIN32}>>:pthread>
@@ -169,12 +167,10 @@ target_compile_options(${PROJECT_NAME} PRIVATE
 # ============================================================================
 # 资源文件
 # ============================================================================
-# 样式表
-qt_add_resources(${PROJECT_NAME} "styles"
-    PREFIX "/"
-    FILES
-        src/ui/resources/styles/main.qss
-)
+# 样式表（Qt5 使用 qrc 文件）
+set(RESOURCE_FILES src/ui/resources/styles.qrc)
+qt5_add_resources(RESOURCE_SOURCES ${RESOURCE_FILES})
+list(APPEND SOURCES ${RESOURCE_SOURCES})
 
 # ============================================================================
 # 安装

src/core/sense_voice_tokenizer.cpp

@@ -18,7 +18,7 @@ bool SenseVoiceTokenizer::load(const QString& tokensPath) {
     }
 
     QTextStream stream(&file);
-    stream.setEncoding(QStringConverter::Utf8);
+    stream.setCodec("UTF-8");
 
     tokenToString_.clear();
 

src/core/tokenizer.cpp

@@ -17,7 +17,7 @@ bool Tokenizer::loadVocabulary(const QString& vocabPath) {
     }
 
     QTextStream stream(&file);
-    stream.setEncoding(QStringConverter::Utf8);
+    stream.setCodec("UTF-8");
     vocabulary_.clear();
 
     while (!stream.atEnd()) {

src/core/whisper_tokenizer.cpp

@@ -17,7 +17,7 @@ bool WhisperTokenizer::loadVocabulary(const QString& vocabPath) {
     }
 
     QTextStream stream(&file);
-    stream.setEncoding(QStringConverter::Utf8);
+    stream.setCodec("UTF-8");
 
     tokenToString_.clear();
     stringToToken_.clear();

src/ui/resources/styles.qrc

@@ -0,0 +1,6 @@
+<!DOCTYPE RCC>
+<RCC version="1.0">
+    <qresource prefix="/">
+        <file>styles/main.qss</file>
+    </qresource>
+</RCC>

src/utils/logger.cpp

@@ -118,7 +118,7 @@ QString Logger::getTimestamp() {
 void Logger::writeToFile(const QString& line) {
     if (logFile_ && logFile_->isOpen()) {
         QTextStream stream(logFile_);
-        stream.setEncoding(QStringConverter::Utf8);
+        stream.setCodec("UTF-8");
         stream << line << Qt::endl;
         logFile_->flush();
     }

tests/CMakeLists.txt

@@ -36,7 +36,7 @@ target_include_directories(tests PRIVATE
 
 target_link_libraries(tests PRIVATE
     Catch2::Catch2WithMain
-    Qt6::Core
+    Qt5::Core
     pthread
 )