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.

pyrightconfig.json

@@ -0,0 +1,15 @@
+{
+  "include": [
+    "cli.py",
+    "claude_bottle",
+    "tests"
+  ],
+  "exclude": [
+    "**/__pycache__",
+    "**/.venv",
+    "**/venv"
+  ],
+  "pythonVersion": "3.11",
+  "typeCheckingMode": "strict",
+  "reportMissingTypeStubs": "none"
+}