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, 5 insertions, 1 deletions

diff --git a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
index bcb29f2..caeeed0 100644
--- a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
+++ b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
@@ -484,7 +484,11 @@ void GameGamebryo::copyToProfile(QString const& sourcePath,
                                  QString const& sourceFileName,
                                  QString const& destinationFileName)
 {
-  QString filePath = destinationDirectory.absoluteFilePath(destinationFileName);
+  // Use case-insensitive check so we don't create duplicates on Linux
+  // (e.g. a profile with "SkyrimPrefs.ini" from Windows is not overwritten
+  // by a new "skyrimprefs.ini" copy).
+  QString filePath = resolveFileCaseInsensitive(
+      destinationDirectory.absoluteFilePath(destinationFileName));
   if (!QFileInfo(filePath).exists()) {
     QString sourceFile = sourcePath + "/" + sourceFileName;
     // On Linux, try case-insensitive match if the exact source doesn't exist