fix portable rename + route external links through xdg-open scrubber

Issue #70: rename button was disabled for portable instances; the upstream
restriction assumed portable = MO2-binary dir, which doesn't apply here
(binary lives in ~/.local/share/fluorine/bin, instance dir is separate).
Allow rename when not active, and update the portable registry so the
renamed dir keeps showing up.

Issue #67: QLabel::setOpenExternalLinks(true) and friends route through
QDesktopServices::openUrl, which forks xdg-open with our bundled Qt env
inherited — silently fails. Install a global url handler that defers to
shell::Open, which already scrubs LD_LIBRARY_PATH/QT_PLUGIN_PATH.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2 files changed, 35 insertions, 3 deletions

diff --git a/src/src/instancemanagerdialog.cpp b/src/src/instancemanagerdialog.cpp
index b7a232e..f7b9bb1 100644
--- a/src/src/instancemanagerdialog.cpp
+++ b/src/src/instancemanagerdialog.cpp
@@ -518,7 +518,8 @@ void InstanceManagerDialog::rename()
   }
 
   // renaming
-  const QString src = i->directory();
+  const QString src      = i->directory();
+  const bool wasPortable = i->isPortable();
   const QString dest =
       QDir::toNativeSeparators(QFileInfo(src).dir().path() + "/" + newName);
 
@@ -536,8 +537,15 @@ void InstanceManagerDialog::rename()
     return;
   }
 
+  // portable instances are tracked by absolute path in GlobalSettings; update
+  // the registry so the renamed dir keeps showing up in the list.
+  if (wasPortable) {
+    InstanceManager::unregisterPortableInstance(src);
+    InstanceManager::registerPortableInstance(dest);
+  }
+
   // updating ui
-  auto newInstance = std::make_unique<Instance>(dest, false);
+  auto newInstance = std::make_unique<Instance>(dest, wasPortable);
   i                = newInstance.get();
 
   m_model->item(selIndex)->setText(newName);
@@ -864,7 +872,7 @@ void InstanceManagerDialog::fillData(const Instance& ii)
 
   const auto& m = InstanceManager::singleton();
 
-  ui->rename->setEnabled(!ii.isPortable());
+  ui->rename->setEnabled(!ii.isActive());
 
   if (ii.isPortable()) {
     ui->convertToPortable->setVisible(false);
diff --git a/src/src/moapplication.cpp b/src/src/moapplication.cpp
index aac387f..ce05b3a 100644
--- a/src/src/moapplication.cpp
+++ b/src/src/moapplication.cpp
@@ -41,6 +41,7 @@ along with Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
 #include "thread_utils.h"
 #include "tutorialmanager.h"
 #include <QDebug>
+#include <QDesktopServices>
 #include <QFile>
 #include <QPainter>
 #include <QProxyStyle>
@@ -48,6 +49,7 @@ along with Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
 #include <QStringList>
 #include <QStyleFactory>
 #include <QStyleOption>
+#include <QUrl>
 #include <iplugingame.h>
 #include <log.h>
 #include <report.h>
@@ -58,6 +60,19 @@ along with Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
 using namespace MOBase;
 using namespace MOShared;
 
+// Forward QDesktopServices::openUrl() (used by QLabel::setOpenExternalLinks
+// and QTextBrowser auto-open) through shell::Open, which scrubs our bundled
+// LD_LIBRARY_PATH / QT_PLUGIN_PATH before forking xdg-open. Without this the
+// child inherits our runtime env and silently fails to launch a browser.
+class UrlHandlerProxy : public QObject
+{
+  Q_OBJECT
+public:
+  using QObject::QObject;
+public slots:
+  void open(const QUrl& url) { MOBase::shell::Open(url); }
+};
+
 // style proxy that changes the appearance of drop indicators
 //
 class ProxyStyle : public QProxyStyle
@@ -225,6 +240,13 @@ MOApplication::MOApplication(int& argc, char** argv) : QApplication(argc, argv)
   // (Qt resource lookup, relative QFile paths, QtWebEngine sandbox helper)
   // behaves the same as a normal launch. Upstream PR #2379.
   QDir::setCurrent(QCoreApplication::applicationDirPath());
+
+  auto* urlProxy = new UrlHandlerProxy(this);
+  for (const auto& scheme :
+       {QStringLiteral("http"), QStringLiteral("https"),
+        QStringLiteral("file"), QStringLiteral("mailto")}) {
+    QDesktopServices::setUrlHandler(scheme, urlProxy, "open");
+  }
 }
 
 OrganizerCore& MOApplication::core()
@@ -956,3 +978,5 @@ QString MOSplash::getSplashPath(const Settings& settings, const QString& dataPat
 
   return splashPath;
 }
+
+#include "moapplication.moc"