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, 5 insertions, 0 deletions

diff --git a/docker/build-inner.sh b/docker/build-inner.sh
index efbb3d7..a96cf98 100755
--- a/docker/build-inner.sh
+++ b/docker/build-inner.sh
@@ -108,6 +108,11 @@ for d in basic_games data libs dlls; do
 done
 rm -f "${OUT_DIR}/plugins/FNIS"*.py
 
+# Source-tree Python plugins (OMOD installer, etc.).
+for f in /src/src/plugins/*.py; do
+    [ -f "${f}" ] && cp -f "${f}" "${OUT_DIR}/plugins/"
+done
+
 # ── 7z runtime ──
 SO7="build/src/src/dlls/7z.so"
 if [ -f "${SO7}" ]; then