fix(examples): use top-level await for async functions

Replace unawaited function calls with top-level await to fix oxlint
no-floating-promises errors. This ensures examples run to completion
and any errors are properly surfaced.

- examples/index.ts: await quickstart()
- examples/openai-integration.ts: await openaiIntegration()
- examples/ai-sdk-integration.ts: await aiSdkIntegration()
- examples/human-in-the-loop.ts: await humanInTheLoopExample()
- examples/meta-tools.ts: await main() in import.meta.main guard

Author: ryoppippi

examples/ai-sdk-integration.ts

@@ -41,4 +41,4 @@ const aiSdkIntegration = async (): Promise<void> => {
 	assert(text.includes('Michael'), 'Expected employee name to be included in the response');
 };
 
-aiSdkIntegration();
+await aiSdkIntegration();

examples/human-in-the-loop.ts

@@ -103,4 +103,4 @@ const simulateHumanValidation = async (toolCall: ToolCall): Promise<boolean> =>
 	return true;
 };
 
-humanInTheLoopExample();
+await humanInTheLoopExample();

examples/index.ts

@@ -75,7 +75,7 @@ const quickstart = async (): Promise<void> => {
 };
 
 // Run the example
-quickstart();
+await quickstart();
 
 /**
  * # Next Steps

examples/meta-tools.ts

@@ -272,7 +272,7 @@ const main = async () => {
 
 // Run if this file is executed directly
 if (import.meta.main) {
-	main();
+	await main();
 }
 
 export { metaToolsWithAISDK, metaToolsWithOpenAI, directMetaToolUsage, dynamicToolRouter };

examples/openai-integration.ts

@@ -66,4 +66,4 @@ const openaiIntegration = async (): Promise<void> => {
 };
 
 // Run the example
-openaiIntegration();
+await openaiIntegration();