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, 12 insertions, 0 deletions

diff --git a/libs/uibase/include/uibase/filesystemutilities.h b/libs/uibase/include/uibase/filesystemutilities.h
index ae074c6..a98ba7b 100644
--- a/libs/uibase/include/uibase/filesystemutilities.h
+++ b/libs/uibase/include/uibase/filesystemutilities.h
@@ -31,6 +31,18 @@ QDLLEXPORT QString sanitizeFileName(const QString& name,
  **/
 QDLLEXPORT bool validFileName(const QString& name);
 
+/**
+ * @brief Resolve a file path case-insensitively on Linux.
+ *
+ * On Windows (case-insensitive FS), returns the input path as-is.
+ * On Linux, if the exact path doesn't exist, searches the parent directory
+ * for a file matching the name case-insensitively.
+ *
+ * @param path the absolute file path to resolve
+ * @return the resolved path (with correct case) or the original path if not found
+ */
+QDLLEXPORT QString resolveFileCaseInsensitive(const QString& path);
+
 }  // namespace MOBase
 
 #endif  // FILESYSTEM_H