fix(plugin-mcp): import core sdk surface in core build

Author: fdarian

packages/plugins/mcp/src/sdk/invoke.ts

@@ -26,7 +26,7 @@ import {
   UrlElicitation,
   type Elicit,
   type ElicitationRequest,
-} from "@executor-js/sdk";
+} from "@executor-js/sdk/core";
 
 import { McpConnectionError, McpInvocationError, McpOAuthReauthorizationRequired } from "./errors";
 import type { McpConnection, McpConnector } from "./connection";

packages/plugins/mcp/src/sdk/plugin.ts

@@ -30,7 +30,7 @@ import {
   type ToolAnnotations,
   type ToolDef,
   ToolName,
-} from "@executor-js/sdk";
+} from "@executor-js/sdk/core";
 
 import {
   TOKEN_VARIABLE,