add mcp fix

src/fgai/graylog_mcp.py

@@ -66,8 +66,9 @@ class GraylogMcpClient:
         credentials = base64.b64encode(f"{value}:token".encode("utf-8")).decode("ascii")
         return f"Basic {credentials}"
 
-    def probe(self) -> dict[str, object]:
-        self.session_id = None
+    def probe(self, *, force_new_session: bool = False) -> dict[str, object]:
+        if force_new_session:
+            self.session_id = None
         initialized = self._call(
             "initialize",
             {"protocolVersion": "2025-06-18", "capabilities": {}, "clientInfo": {"name": "fgAI", "version": "0.1"}},
@@ -90,7 +91,7 @@ class GraylogMcpClient:
         except RuntimeError as exc:
             if not self._should_reconnect(str(exc)):
                 raise
-            self.probe()
+            self.probe(force_new_session=True)
             return self._call("tools/call", {"name": name, "arguments": arguments})
 
     @staticmethod