Add Root Builder plugin, Linux game detection, and OMOD installer fix

- New native Root Builder plugin (src/plugins/rootbuilder.py) with copy
  and symlink deploy modes, auto-deploy hooks, backup/restore, and
  third-party conflict detection that moves incompatible plugins to
  DisabledPlugins/. In link mode, .exe/.dll are always copied to avoid
  Wine/Proton path resolution issues with symlinked executables.

- Fix basic_games detection on Linux: steam_utils now checks native
  Steam paths (~/.local/share/Steam, Flatpak, Snap), epic_utils uses
  correct Linux Heroic config paths, gog_utils falls back to Heroic
  GOG installed.json when Windows registry is unavailable.

- Fix OMOD installer crash: isArchiveSupported now handles both IFileTree
  (from mod list refresh) and string (from install check) arguments.

- Add flatpak manifest step to copy source-tree Python plugins
  (src/plugins/*.py) into the build output.

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

1 files changed, 7 insertions, 6 deletions

diff --git a/libs/installer_fomod/src/fomodinstallerdialog.cpp b/libs/installer_fomod/src/fomodinstallerdialog.cpp
index ef6c44f..0fa6bfc 100644
--- a/libs/installer_fomod/src/fomodinstallerdialog.cpp
+++ b/libs/installer_fomod/src/fomodinstallerdialog.cpp
@@ -77,12 +77,13 @@ bool PagesDescending(QGroupBox* LHS, QGroupBox* RHS)
 
 FomodInstallerDialog::FomodInstallerDialog(
     InstallerFomod* installer, const GuessedValue<QString>& modName,
-    const QString& fomodPath,
+    const QString& fomodPath, const QString& fomodDirName,
     const std::function<MOBase::IPluginList::PluginStates(const QString&)>& fileCheck,
     QWidget* parent)
     : QDialog(parent), ui(new Ui::FomodInstallerDialog), m_Installer(installer),
-      m_ModName(modName), m_ModID(-1), m_FomodPath(fomodPath), m_Manual(false),
-      m_FileCheck(fileCheck), m_FileSystemItemSequence()
+      m_ModName(modName), m_ModID(-1), m_FomodPath(fomodPath),
+      m_FomodDirName(fomodDirName), m_Manual(false), m_FileCheck(fileCheck),
+      m_FileSystemItemSequence()
 {
   ui->setupUi(this);
   setWindowFlags(windowFlags() | Qt::WindowMaximizeButtonHint);
@@ -235,7 +236,7 @@ void FomodInstallerDialog::readXml(QFile& file,
 
 void FomodInstallerDialog::readInfoXml()
 {
-  QFile file(QDir::tempPath() + "/" + m_FomodPath + "/fomod/info.xml");
+  QFile file(QDir::tempPath() + "/" + m_FomodPath + "/" + m_FomodDirName + "/info.xml");
 
   // We don't need a info.xml file, so we just return if we cannot open it:
   if (!file.open(QIODevice::ReadOnly)) {
@@ -246,7 +247,7 @@ void FomodInstallerDialog::readInfoXml()
 
 void FomodInstallerDialog::readModuleConfigXml()
 {
-  QFile file(QDir::tempPath() + "/" + m_FomodPath + "/fomod/ModuleConfig.xml");
+  QFile file(QDir::tempPath() + "/" + m_FomodPath + "/" + m_FomodDirName + "/ModuleConfig.xml");
   if (!file.open(QIODevice::ReadOnly)) {
     throw Exception(tr("%1 missing.").arg(file.fileName()));
   }
@@ -261,7 +262,7 @@ void FomodInstallerDialog::initData(IOrganizer* moInfo)
   readInfoXml();
 
   QString screenshotPath =
-      QDir::tempPath() + "/" + m_FomodPath + "/fomod/screenshot.png";
+      QDir::tempPath() + "/" + m_FomodPath + "/" + m_FomodDirName + "/screenshot.png";
   if (!QImage(screenshotPath).isNull()) {
     ui->screenshotLabel->setScalableResource(screenshotPath);
     ui->screenshotExpand->setVisible(false);