misc: replace Any with precise types

Curses screens, windows and pads are typed as curses.window, and the
widgets that may get no parent window take curses.window | None.

- EventHandler is generic over a ParamSpec, so each handler declares
  the arguments it passes, and MenuView is generic over the item its
  on_confirm hands out. Choice callbacks take no arguments.
- Scrollable is generic over its items, which DataTable and ListBox
  fix to tuple[str, str] and str.
- random.choice() and choice_low() are generic over the sequence, so
  the casts at their call sites are gone. BasicUserInterface.menu()
  and util.first() are generic too.
- Signal callbacks and their payloads are Callable[..., object] and
  object, since emit() only forwards them.
- JSON values in game_data are object and narrowed by isinstance,
  and data files are Traversable.
- Signal handlers take an int and a FrameType | None, and
  list_players() takes a TextIO.
- The focus_standout() context managers return
  Generator[None, None, None].

Any remains in three places: Player.__setstate__, whose pickled
__dict__ holds values of every type; Focusable.__init__, a mixin that
passes *args and **kwargs through to the next class; and the values
load_game_data() collects, whose element type depends on the field
each one fills.

pqcli/ui/curses/views/create_character_view/choose_character_class_view.py

@@ -1,16 +1,16 @@
+import curses
 import functools
 from collections.abc import Sequence
-from typing import Any
 
 from pqcli.config import Class
 from pqcli.ui.curses.util import KEYS_CANCEL, Choice
 from pqcli.ui.curses.views.menu_view import MenuView
 
 
-class ChooseCharacterClassView(MenuView):
+class ChooseCharacterClassView(MenuView[Class]):
     def __init__(
         self,
-        screen: Any,
+        screen: curses.window,
         classes: Sequence[Class],
         class_: Class | None = None,
     ) -> None:

pqcli/ui/curses/views/create_character_view/choose_character_name_view.py

@@ -1,6 +1,5 @@
 import curses
 import curses.ascii
-from typing import Any
 
 from pqcli.mechanic import generate_name
 from pqcli.ui.curses.event_handler import EventHandler
@@ -10,15 +9,17 @@ from pqcli.ui.curses.widgets.focusable import focus_standout
 
 
 class ChooseCharacterNameView(BaseView):
-    def __init__(self, screen: Any, character_name: str | None = None) -> None:
+    def __init__(
+        self, screen: curses.window, character_name: str | None = None
+    ) -> None:
         super().__init__(screen)
 
-        self.on_cancel = EventHandler()
-        self.on_confirm = EventHandler()
+        self.on_cancel = EventHandler[[]]()
+        self.on_confirm = EventHandler[[str]]()
 
         self._active_widget = 0
-        self._win: Any | None = None
-        self._text_win: Any | None = None
+        self._win: curses.window | None = None
+        self._text_win: curses.window | None = None
         self._text = character_name or generate_name()
 
     def start(self) -> None:

pqcli/ui/curses/views/create_character_view/choose_character_race_view.py

@@ -1,16 +1,16 @@
+import curses
 import functools
 from collections.abc import Sequence
-from typing import Any
 
 from pqcli.config import Race
 from pqcli.ui.curses.util import KEYS_CANCEL, Choice
 from pqcli.ui.curses.views.menu_view import MenuView
 
 
-class ChooseCharacterRaceView(MenuView):
+class ChooseCharacterRaceView(MenuView[Race]):
     def __init__(
         self,
-        screen: Any,
+        screen: curses.window,
         races: Sequence[Race],
         race: Race | None = None,
     ) -> None:

pqcli/ui/curses/views/create_character_view/choose_character_stats_view.py

@@ -1,8 +1,9 @@
+import curses
 import curses.ascii
-from typing import Any
 
 from pqcli.config import PRIME_STATS
-from pqcli.mechanic import StatsBuilder
+from pqcli.mechanic import Stats, StatsBuilder
+from pqcli.random import RngState
 from pqcli.ui.curses.event_handler import EventHandler
 from pqcli.ui.curses.util import KEYS_CANCEL, KEYS_CYCLE, KEYS_DOWN, KEYS_UP
 from pqcli.ui.curses.views.base_view import BaseView
@@ -10,15 +11,15 @@ from pqcli.ui.curses.widgets.focusable import focus_standout
 
 
 class ChooseCharacterStatsView(BaseView):
-    def __init__(self, screen: Any) -> None:
+    def __init__(self, screen: curses.window) -> None:
         super().__init__(screen)
 
-        self.on_cancel = EventHandler()
-        self.on_confirm = EventHandler()
+        self.on_cancel = EventHandler[[]]()
+        self.on_confirm = EventHandler[[Stats, RngState]]()
 
         self._active_widget = 0
-        self._win: Any | None = None
-        self._stats_win: Any | None = None
+        self._win: curses.window | None = None
+        self._stats_win: curses.window | None = None
 
         self._stats_builder = StatsBuilder()
         self._stats = self._stats_builder.roll()