chore: import upstream snapshot with attribution

src/agents/memory/__init__.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Any
+
+from .openai_conversations_session import OpenAIConversationsSession
+from .openai_responses_compaction_session import OpenAIResponsesCompactionSession
+from .session import (
+    OpenAIResponsesCompactionArgs,
+    OpenAIResponsesCompactionAwareSession,
+    Session,
+    SessionABC,
+    is_openai_responses_compaction_aware_session,
+)
+from .session_settings import SessionSettings
+from .util import SessionInputCallback
+
+if TYPE_CHECKING:
+    from .sqlite_session import SQLiteSession
+
+__all__ = [
+    "Session",
+    "SessionABC",
+    "SessionInputCallback",
+    "SessionSettings",
+    "SQLiteSession",
+    "OpenAIConversationsSession",
+    "OpenAIResponsesCompactionSession",
+    "OpenAIResponsesCompactionArgs",
+    "OpenAIResponsesCompactionAwareSession",
+    "is_openai_responses_compaction_aware_session",
+]
+
+
+def __getattr__(name: str) -> Any:
+    if name == "SQLiteSession":
+        from .sqlite_session import SQLiteSession
+
+        globals()[name] = SQLiteSession
+        return SQLiteSession
+
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")