feat: improve RenPy conversion and support MIST runtime

backend/app/converter/archive.py

@@ -82,7 +82,9 @@ def find_game_dir(root: Path) -> Path:
         p = Path(dirpath)
         depth = len(p.relative_to(root).parts)
         score = (0 if p.name.lower() == "game" else 100) + depth
-        if p.name.lower() in ("renpy", "common") or "renpy" in [x.lower() for x in p.parts[-3:]]:
+        # Only engine internals inside this distribution matter. A collection's
+        # parent directory may itself be named Renpy.
+        if p.name.lower() in ("renpy", "common") or "renpy" in [x.lower() for x in p.relative_to(root).parts]:
             continue
         if best is None or score < best[0]:
             best = (score, p)