Add FUSE external mapping support, BG3/Oblivion Remastered fixes, fomod-plus and NaK integration

FUSE VFS now deploys non-data-dir mod mappings (Paks, OBSE, UE4SS, etc.)
via real symlinks and injects file-level data-dir mappings (plugins.txt,
loadorder.txt) into the VFS tree. Fixes game launches for Oblivion
Remastered (Root Builder path resolution, script extender support) and
BG3 (Wine prefix documents directory, file mapper symlinks on Linux).

Vendors mo2-fomod-plus plugin and NaK crate for FOMOD installer and
game finder/runtime support.

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

1 files changed, 64 insertions, 0 deletions

diff --git a/libs/installer_fomod_plus/scanner/FomodPlusScanner.h b/libs/installer_fomod_plus/scanner/FomodPlusScanner.h
new file mode 100644
index 0000000..b7893f7
--- /dev/null
+++ b/libs/installer_fomod_plus/scanner/FomodPlusScanner.h
@@ -0,0 +1,64 @@
+#ifndef FOMODPLUSSCANNER_H
+#define FOMODPLUSSCANNER_H
+
+#include "archiveparser.h"
+
+#include <iplugin.h>
+#include <iplugintool.h>
+
+#include <QDialog>
+#include <QProgressBar>
+
+using namespace MOBase;
+
+class FomodPlusScanner final : public IPluginTool {
+    Q_OBJECT
+    Q_INTERFACES(MOBase::IPlugin MOBase::IPluginTool)
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+    Q_PLUGIN_METADATA(IID "io.clearing.FomodPlusScanner" FILE "fomodplusscanner.json")
+#endif
+
+public:
+    ~FomodPlusScanner() override
+    {
+        delete mDialog;
+        mDialog      = nullptr;
+        mProgressBar = nullptr;
+    }
+
+    bool init(IOrganizer* organizer) override;
+
+    void onScanClicked() const;
+
+    void cleanup() const;
+
+    [[nodiscard]] QString name() const override { return "FOMOD Scanner"; } // This should not be translated
+    [[nodiscard]] QString author() const override { return "clearing"; }
+    [[nodiscard]] QString description() const override { return tr("Scans modlist for files installed via FOMOD"); }
+    [[nodiscard]] VersionInfo version() const override { return {1, 0, 0, VersionInfo::RELEASE_FINAL}; }
+
+    [[nodiscard]] QList<PluginSetting> settings() const override { return {}; }
+
+    [[nodiscard]] QString displayName() const override { return tr("FOMOD Scanner"); }
+
+    [[nodiscard]] QString tooltip() const override { return tr("Scan modlist for files installed via FOMOD"); }
+
+    [[nodiscard]] QIcon icon() const override { return QIcon(":/fomod/hat"); }
+
+    void display() const override;
+
+    int scanLoadOrder(const std::function<bool(IModInterface*, ScanResult result)> &callback) const;
+
+    ScanResult openInstallationArchive(const IModInterface* mod) const;
+
+    static bool setFomodInfoForMod(IModInterface *mod, ScanResult result);
+
+    static bool removeFomodInfoFromMod(IModInterface *mod, ScanResult);
+
+private:
+    QDialog* mDialog{ nullptr };
+    QProgressBar* mProgressBar{ nullptr };
+    IOrganizer* mOrganizer{ nullptr };
+};
+
+#endif  // FOMODPLUSSCANNER_H
\ No newline at end of file