fix httpx client resource leak with proper async cleanup

packages/openai-sdk-python/src/supermemory_openai/memory_client.py

@@ -42,6 +42,10 @@ class MemoryClient:
 
     async def __aexit__(self, *args):
         """Async context manager exit - cleanup client."""
+        await self.aclose()
+
+    async def aclose(self):
+        """Close the httpx client."""
         if self._client:
             await self._client.aclose()
             self._client = None

packages/openai-sdk-python/src/supermemory_openai/wrapper.py

@@ -105,6 +105,11 @@ class SupermemoryOpenAIWrapper:
             self._executor.shutdown(wait=True)
             self._executor = None
 
+    async def aclose(self) -> None:
+        """Async cleanup of resources."""
+        await self.memory_client.aclose()
+        self.close()
+
     def __enter__(self):
         """Context manager entry."""
         return self
@@ -113,6 +118,14 @@ class SupermemoryOpenAIWrapper:
         """Context manager exit - cleanup resources."""
         self.close()
 
+    async def __aenter__(self):
+        """Async context manager entry."""
+        return self
+
+    async def __aexit__(self, *args):
+        """Async context manager exit - cleanup resources."""
+        await self.aclose()
+
     async def _add_memory_if_needed(self, messages: List[ChatCompletionMessageParam]) -> None:
         """Add conversation to memory if configured to do so."""
         if self.options.add_memory != "always":