Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/@modelcontextprotocol/sdk/dist/esm/shared/stdio.d.ts

@@ -0,0 +1,13 @@
+import { JSONRPCMessage } from '../types.js';
+/**
+ * Buffers a continuous stdio stream into discrete JSON-RPC messages.
+ */
+export declare class ReadBuffer {
+    private _buffer?;
+    append(chunk: Buffer): void;
+    readMessage(): JSONRPCMessage | null;
+    clear(): void;
+}
+export declare function deserializeMessage(line: string): JSONRPCMessage;
+export declare function serializeMessage(message: JSONRPCMessage): string;
+//# sourceMappingURL=stdio.d.ts.map