Add type annotations to global storage dictionary (#3548)

This will help catch issues like #3530.

archinstall/lib/installer.py

@@ -92,8 +92,6 @@ class Installer:
 
 		self.post_base_install: list[Callable] = []  # type: ignore[type-arg]
 
-		# TODO: Figure out which one of these two we'll use.. But currently we're mixing them..
-		storage['session'] = self
 		storage['installation_session'] = self
 
 		self._modules: list[str] = []

archinstall/lib/storage.py

@@ -6,9 +6,21 @@
 #
 # And Keeping this in dict ensures that variables are shared across imports.
 from pathlib import Path
-from typing import Any
+from typing import TYPE_CHECKING, NotRequired, TypedDict
 
-storage: dict[str, Any] = {
-	'LOG_PATH': Path('/var/log/archinstall'),
+if TYPE_CHECKING:
+	from archinstall.lib.boot import Boot
+	from archinstall.lib.installer import Installer
+
+
+class _StorageDict(TypedDict):
+	LOG_FILE: Path
+	LOG_PATH: Path
+	active_boot: NotRequired['Boot | None']
+	installation_session: NotRequired['Installer']
+
+
+storage: _StorageDict = {
 	'LOG_FILE': Path('install.log'),
+	'LOG_PATH': Path('/var/log/archinstall'),
 }