Fix optional dependency handling for Redis and MinIO adapters.

Lazy-load adapters at package boundaries and fail fast with install hints when extras are missing.

Co-authored-by: Cursor <[email protected]>

python_repositories/adapters/__init__.py

@@ -4,10 +4,33 @@ Adapters for various backend repositories (e.g., Redis, Minio).
 This module exposes concrete implementations for repository interfaces.
 """
 
-from .redis_adapter import RedisAdapter
-from .minio_adapter import MinioAdapter
+from __future__ import annotations
+
+import importlib
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from .minio_adapter import MinioAdapter
+    from .redis_adapter import RedisAdapter
+
+_LAZY_EXPORTS = {
+    "RedisAdapter": (".redis_adapter", "RedisAdapter"),
+    "MinioAdapter": (".minio_adapter", "MinioAdapter"),
+}
 
 __all__ = [
     "RedisAdapter",
     "MinioAdapter",
 ]
+
+
+def __getattr__(name: str) -> object:
+    if name in _LAZY_EXPORTS:
+        module_path, attr = _LAZY_EXPORTS[name]
+        module = importlib.import_module(module_path, __package__)
+        return getattr(module, attr)
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+
+def __dir__() -> list[str]:
+    return sorted(__all__)