refactor: add Settings singleton pattern for config management

test_rpc.py

@@ -1,14 +1,11 @@
-import os
-from sabatron_tryton_rpc_client.client import Client
-import datetime
+import sys
+from pathlib import Path
 
-client = Client(
-    hostname=os.environ.get("TRYTON_HOSTNAME", "localhost"),
-    database=os.environ.get("TRYTON_DATABASE", "tryton"),
-    username=os.environ.get("TRYTON_USERNAME", "admin"),
-    password=os.environ.get("TRYTON_PASSWORD", ""),
-    port=int(os.environ.get("TRYTON_PORT", 8000)),
-)
+sys.path.insert(0, str(Path(__file__).parent / "src"))
+
+from tryton_mcp.config import settings
+
+client = settings.get_client()
 
 client.connect()