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, 4 insertions, 31 deletions

diff --git a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
index ac9fe22..bcb29f2 100644
--- a/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
+++ b/libs/game_bethesda/src/gamebryo/gamegamebryo.cpp
@@ -1,5 +1,7 @@
 #include "gamegamebryo.h"
 
+#include <uibase/filesystemutilities.h>
+
 #include "bsainvalidation.h"
 #include "dataarchives.h"
 #include "gamebryomoddatacontent.h"
@@ -44,37 +46,8 @@
 #include <string>
 #include <vector>
 
-// Case-insensitive file path resolution for Linux.
-// On Windows (case-insensitive FS), just returns the input path.
-// On Linux, if the exact path doesn't exist, searches the parent directory
-// for a file matching the name case-insensitively.
-static QString resolveFileCaseInsensitive(const QString& filePath)
-{
-#ifdef _WIN32
-  return filePath;
-#else
-  if (QFileInfo::exists(filePath)) {
-    return filePath;
-  }
-
-  QFileInfo info(filePath);
-  QDir dir(info.path());
-  if (!dir.exists()) {
-    return filePath;
-  }
-
-  const QString target = info.fileName();
-  const QStringList entries =
-      dir.entryList(QDir::Files | QDir::Hidden | QDir::System);
-  for (const QString& entry : entries) {
-    if (entry.compare(target, Qt::CaseInsensitive) == 0) {
-      return dir.absoluteFilePath(entry);
-    }
-  }
-
-  return filePath;
-#endif
-}
+// Local resolveFileCaseInsensitive moved to MOBase::resolveFileCaseInsensitive
+using MOBase::resolveFileCaseInsensitive;
 
 GameGamebryo::GameGamebryo() {}