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/env.py

@@ -47,8 +47,8 @@ class ResolvedEnv:
     resolve_env; the backend forwards by-name. `literals` carry their
     values verbatim and are serialized by the backend."""
 
-    forwarded: list[str] = field(default_factory=list)
-    literals: dict[str, str] = field(default_factory=dict)
+    forwarded: list[str] = field(default_factory=list[str])
+    literals: dict[str, str] = field(default_factory=dict[str, str])
 
 
 def env_entry_kind(raw: str) -> str: