Fixed issues with encodings and wine / proton compatibilities.

ptlinux/paths.py

@@ -20,7 +20,13 @@ def _xdg_path(
 	fallback: Path,
 ) -> Path:
 	value = environment.get(variable)
-	return Path(value).expanduser() if value else fallback
+	if not value:
+		return fallback
+	path = Path(value).expanduser()
+	# The XDG Base Directory specification requires absolute paths. Ignoring an
+	# invalid relative value keeps settings anchored to HOME instead of making
+	# their location depend on the launcher's current working directory.
+	return path if path.is_absolute() else fallback
 
 
 @dataclass(frozen=True)
@@ -238,6 +244,10 @@ class AppPaths:
 	def settings_file(self) -> Path:
 		return self.config / "settings.json"
 
+	@property
+	def settings_lock(self) -> Path:
+		return self.config / "settings.lock"
+
 	def create_base_directories(self) -> None:
 		for path in (
 			self.data,