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

node_modules/@anthropic-ai/sdk/src/tsconfig.json

@@ -0,0 +1,11 @@
+{
+  // this config is included in the published src directory to prevent TS errors
+  // from appearing when users go to source, and VSCode opens the source .ts file
+  // via declaration maps
+  "include": ["index.ts"],
+  "compilerOptions": {
+    "target": "es2015",
+    "lib": ["DOM"],
+    "moduleResolution": "node"
+  }
+}