refactor: drop unused abc.ABC from BaseInstrument; document config holders

lite_bootstrap/instruments/base.py

@@ -1,4 +1,3 @@
-import abc
 import dataclasses
 import typing
 
@@ -31,7 +30,7 @@ def from_object(cls, obj: object) -> typing_extensions.Self:
 
 
 @dataclasses.dataclass(kw_only=True, slots=True, frozen=True)
-class BaseInstrument(abc.ABC, typing.Generic[ConfigT]):
+class BaseInstrument(typing.Generic[ConfigT]):
     bootstrap_config: ConfigT
     not_ready_message = ""
     missing_dependency_message = ""

lite_bootstrap/instruments/prometheus_instrument.py

@@ -1,3 +1,5 @@
+"""Prometheus config and readiness check; framework-specific bootstrap lives in the bootstrapper subclasses."""
+
 import dataclasses
 
 from lite_bootstrap.helpers.path import is_valid_path

lite_bootstrap/instruments/swagger_instrument.py

@@ -1,3 +1,5 @@
+"""Swagger config and minimal base instrument; framework-specific behavior lives in the bootstrapper subclasses."""
+
 import dataclasses
 
 from lite_bootstrap.instruments.base import BaseConfig, BaseInstrument