Fixed AppImage window not opening

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Packaging/BuildAppImage.sh

@@ -19,6 +19,7 @@ podman run --rm --security-opt label=disable -v "$PWD:/src" -w /src \
     uv pip install --quiet --python build/Container/venv -r requirements.txt pyinstaller
     build/Container/venv/bin/pyinstaller --noconfirm --clean --log-level WARN \
         --onefile --windowed --name SaraSort --collect-data flet \
+        --runtime-hook "$PWD/Packaging/RestoreLibraryPath.py" \
         --add-data "$PWD/assets:assets" \
         --distpath build/PyInstaller/dist --workpath build/PyInstaller/work --specpath build/PyInstaller \
         "$PWD/Main.py"'

Packaging/RestoreLibraryPath.py

@@ -0,0 +1,11 @@
+# PyInstaller runtime hook. The frozen app runs with LD_LIBRARY_PATH pointing
+# at its bundled libraries, and programs it starts inherit that: Flet's
+# desktop client then loads the bundled (older) libstdc++ instead of the
+# system's and won't start ("GLIBCXX_3.4.29 not found"). Give them the
+# original value back; the app itself has already loaded what it needs.
+import os
+
+if "LD_LIBRARY_PATH_ORIG" in os.environ:
+    os.environ["LD_LIBRARY_PATH"] = os.environ["LD_LIBRARY_PATH_ORIG"]
+else:
+    os.environ.pop("LD_LIBRARY_PATH", None)