chore(types): add pyright strict config and fix resulting errors

Adds pyrightconfig.json (strict, Python 3.11) covering cli.py,
claude_bottle/, and tests/. Fixes the 49 strict-mode errors:

- Type DockerBottle.teardown as Callable[[], None].
- ResolvedEnv default_factory uses parameterized list[str] / dict[str, str].
- Erase BottleBackend generics at the registry boundary
  (BottleBackend[Any, Any]) since selection is runtime-driven and
  callers use the unparameterized interface.
- DockerBottleBackend.launch returns Generator[DockerBottle, None, None];
  @contextmanager now flags Iterator returns as deprecated.
- Sidestep cli.list submodule shadowing builtins.list in main()'s argv
  annotation via an aliased re-import in cli/__init__.py.
- Cast cfg[...] results in test_pipelock_yaml at the dict[str, object]
  boundary.
- Annotate write_fixture's fn parameter and _manifest_with_runtime's
  return type.

claude_bottle/backend/__init__.py

@@ -34,7 +34,7 @@ from abc import ABC, abstractmethod
 from contextlib import AbstractContextManager
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Generic, TypeVar
+from typing import Any, Generic, TypeVar
 
 from ..log import die
 from ..manifest import Manifest
@@ -199,14 +199,16 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
 from .docker import DockerBottleBackend  # noqa: E402
 
 
-# The dict carries heterogeneous BottleBackend specializations; callers
-# use it through the unparameterized BottleBackend interface.
-_BACKENDS: dict[str, BottleBackend] = {
+# The dict is heterogeneous: each value is a BottleBackend specialized
+# over its own plan type. Concrete plan types are erased here because
+# the registry is selected at runtime and the CLI only needs the
+# unparameterized methods (prepare → plan → launch(plan), cleanup, etc.).
+_BACKENDS: dict[str, BottleBackend[Any, Any]] = {
     "docker": DockerBottleBackend(),
 }
 
 
-def get_bottle_backend() -> BottleBackend:
+def get_bottle_backend() -> BottleBackend[Any, Any]:
     """Resolve the bottle backend for the active environment. Dies with
     a pointer at the known backends if CLAUDE_BOTTLE_BACKEND names an
     unimplemented one."""

claude_bottle/backend/docker/backend.py

@@ -16,7 +16,7 @@ import subprocess
 import sys
 from contextlib import ExitStack, contextmanager
 from pathlib import Path
-from typing import Iterator, Sequence
+from typing import Generator, Sequence
 
 from ... import pipelock
 from ...env import ResolvedEnv, resolve_env
@@ -165,7 +165,7 @@ class DockerBottleBackend(BottleBackend["DockerBottlePlan", "DockerBottleCleanup
         env_file.chmod(0o600)
 
     @contextmanager
-    def launch(self, plan: DockerBottlePlan) -> Iterator[DockerBottle]:
+    def launch(self, plan: DockerBottlePlan) -> Generator[DockerBottle, None, None]:
         """Build, launch, and provision a Docker bottle. Teardown on exit."""
         stack = ExitStack()
 

claude_bottle/backend/docker/bottle.py

@@ -9,6 +9,7 @@ prompt was provisioned.
 from __future__ import annotations
 
 import subprocess
+from typing import Callable
 
 from .. import Bottle
 
@@ -16,7 +17,12 @@ from .. import Bottle
 class DockerBottle(Bottle):
     """Concrete Bottle for Docker."""
 
-    def __init__(self, container: str, teardown, prompt_path_in_container: str | None):
+    def __init__(
+        self,
+        container: str,
+        teardown: Callable[[], None],
+        prompt_path_in_container: str | None,
+    ):
         self.name = container
         self._teardown = teardown
         self._prompt_path = prompt_path_in_container