refactor: use slots and strongly typed properties

src/token_manager.py

@@ -7,17 +7,26 @@ import typing
 from . import project
 
 if typing.TYPE_CHECKING:
-    from . import params, registry
+    from .params import Parameters
+    from .registry import Registry
 
 
 class TokenManager:
+    __slots__ = [
+        "logger",
+        "registry",
+        "token_hashes",
+        "token_salt",
+        "tokens_file",
+    ]
+
     FILE = ".tokens"
 
-    def __init__(self, params: params.Parameters, registry: registry.Registry) -> None:
-        self.logger = logging.getLogger(self.__class__.__name__)
-        self.token_salt = params.token_salt
-        self.tokens_file = pathlib.Path(params.data_dir) / self.FILE
-        self.registry = registry
+    def __init__(self, params: Parameters, registry: Registry) -> None:
+        self.logger: logging.Logger = logging.getLogger(self.__class__.__name__)
+        self.token_salt: str = params.token_salt
+        self.tokens_file: pathlib.Path = pathlib.Path(params.data_dir) / self.FILE
+        self.registry: Registry = registry
         self.token_hashes: list[str] = []
 
     def init(self) -> None: