Fluorine Manager: full Linux port of Mod Organizer 2

Complete native Linux port with FUSE-based virtual filesystem,
Proton/umu-run integration, and Flatpak packaging.

Key features:
- FUSE VFS replacing Windows USVFS (in-process + standalone helper for Flatpak)
- Proton/GE-Proton/umu-run launcher with env var forwarding
- Flatpak support (sandbox-aware VFS, NXM handler, umu-run)
- Wine prefix management UI
- Case-insensitive path resolution for Linux filesystems
- QSettings-safe INI handling (avoids Bethesda INI corruption)
- Portable instance support with auto-generated launcher scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/libs/basic_games/games/game_daggerfallunity.py b/libs/basic_games/games/game_daggerfallunity.py
new file mode 100644
index 0000000..6c170f1
--- /dev/null
+++ b/libs/basic_games/games/game_daggerfallunity.py
@@ -0,0 +1,56 @@
+import mobase
+
+from ..basic_game import BasicGame
+
+
+class DaggerfallUnityModDataChecker(mobase.ModDataChecker):
+    def __init__(self):
+        super().__init__()
+        self.validDirNames = [
+            "biogs",
+            "docs",
+            "factions",
+            "fonts",
+            "mods",
+            "questpacks",
+            "quests",
+            "sound",
+            "soundfonts",
+            "spellicons",
+            "tables",
+            "text",
+            "textures",
+            "worlddata",
+            "aa",
+        ]
+
+    def dataLooksValid(
+        self, filetree: mobase.IFileTree
+    ) -> mobase.ModDataChecker.CheckReturn:
+        for entry in filetree:
+            if not entry.isDir():
+                continue
+            if entry.name().casefold() in self.validDirNames:
+                return mobase.ModDataChecker.VALID
+        return mobase.ModDataChecker.INVALID
+
+
+class DaggerfallUnityGame(BasicGame):
+    def init(self, organizer: mobase.IOrganizer) -> bool:
+        super().init(organizer)
+        self._register_feature(DaggerfallUnityModDataChecker())
+        return True
+
+    Name = "Daggerfall Unity Support Plugin"
+    Author = "HomerSimpleton"
+    Version = "1.0.0"
+
+    GameName = "Daggerfall Unity"
+    GameShortName = "daggerfallunity"
+    GameBinary = "DaggerfallUnity.exe"
+    GameLauncher = "DaggerfallUnity.exe"
+    GameDataPath = "%GAME_PATH%/DaggerfallUnity_Data/StreamingAssets"
+    GameSupportURL = (
+        r"https://github.com/ModOrganizer2/modorganizer-basic_games/wiki/"
+        "Game:-Daggerfall-Unity"
+    )