agent: rename streamablehttp_client -> streamable_http_client

The MCP Python SDK renamed the import from `streamablehttp_client` to
`streamable_http_client` (PR modelcontextprotocol/python-sdk#1177).
The old name is deprecated and has been removed from current main.
Pyright/Windsurf flags it as deprecated.

Signature is backward-compatible: `url` remains the only required arg
and the context manager still yields a 3-tuple, so the destructuring
`async with streamable_http_client(url) as (read, write, _):` still
works without further changes.

Author: prashant9501

securelife_client_app/agent.py

@@ -8,7 +8,7 @@
 # Load environment variables from .env file
 load_dotenv()
 
-from mcp.client.streamable_http import streamablehttp_client
+from mcp.client.streamable_http import streamable_http_client
 from mcp.client.session import ClientSession
 from langchain_openai import ChatOpenAI
 from langchain_core.prompts import ChatPromptTemplate
@@ -26,7 +26,7 @@ def __init__(self, server_url="http://localhost:8765/mcp"):
 
     async def _call_tool(self, tool_name: str, arguments: dict) -> dict:
         """Connects via Streamable HTTP to the MCP server and handles async communication."""
-        async with streamablehttp_client(self.server_url) as (read, write, _):
+        async with streamable_http_client(self.server_url) as (read, write, _):
             async with ClientSession(read, write) as session:
                 await session.initialize()
                 result = await session.call_tool(tool_name, arguments=arguments)