fix:修复安装成功后显示为下载完成的bug

src/appdelegate.cpp

@@ -14,15 +14,16 @@ AppDelegate::AppDelegate(QObject *parent)
             [this](const QString &packageName, bool success) {
         if (m_downloads.contains(packageName)) {
             m_downloads[packageName].isDownloading = false;
-            m_downloads[packageName].isInstalled = true;
+            // 不要提前设置 isInstalled
             emit updateDisplay(packageName);
             qDebug() << (success ? "下载完成:" : "下载失败:") << packageName;
             if (success) {
-                enqueueInstall(packageName);
+                enqueueInstall(packageName); // 安装完成后再设置 isInstalled
             }
         }
     });
 
+
     connect(m_downloadManager, &DownloadManager::downloadProgress, this,
             [this](const QString &packageName, int progress) {
         if (m_downloads.contains(packageName)) {
@@ -277,11 +278,11 @@ void AppDelegate::startNextInstall() {
             qDebug().noquote() << QString::fromLocal8Bit(err);
         });
         connect(m_installProcess, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished),
-                this, [this, packageName, logFile](int /*exitCode*/, QProcess::ExitStatus /*status*/) {
+                this, [this, packageName, logFile](int exitCode, QProcess::ExitStatus status) {
             if (logFile) logFile->close();
-            // 若未检测到“软件包已安装”，此处兜底
-            if (!m_downloads[packageName].isInstalled) {
             m_downloads[packageName].isInstalling = false;
+            if (exitCode == 0) { 
+                m_downloads[packageName].isInstalled = true;  // 安装成功
             }
             emit updateDisplay(packageName);
             m_installProcess->deleteLater();
@@ -289,6 +290,7 @@ void AppDelegate::startNextInstall() {
             m_installingPackage.clear();
             startNextInstall();
         });
+
     } else {
         // 日志文件无法打开时，仍然要连接原有信号
         connect(m_installProcess, &QProcess::readyReadStandardOutput, this, [this, packageName]() {