Cleanup and security updates.

ptlinux/paths.py

@@ -144,6 +144,12 @@ class AppPaths:
 	def game_import_manifest(self) -> Path:
 		return self.state / "game-import.json"
 
+	@property
+	def game_import_quarantine(self) -> Path:
+		"""Recoverable files excluded while authenticating an imported game."""
+
+		return self.data / "import-quarantine"
+
 	@property
 	def native_depot_state(self) -> Path:
 		"""Last completed native depot synchronization."""