Properly clean up tmp files

dist/index.js

@@ -52596,6 +52596,9 @@ function isPromptYamlFile(filePath) {
  * @returns Resolves when the action is complete.
  */
 async function run() {
+    let responseFile = null;
+    // Set up graceful cleanup for temporary files on process exit
+    tmpExports.setGracefulCleanup();
     try {
         const promptFilePath = coreExports.getInput('prompt-file');
         const inputVariables = coreExports.getInput('input');
@@ -52648,10 +52651,9 @@ async function run() {
         }
         coreExports.setOutput('response', modelResponse || '');
         // Create a secure temporary file instead of using the temp directory directly
-        const responseFile = tmpExports.fileSync({
+        responseFile = tmpExports.fileSync({
             prefix: 'modelResponse-',
             postfix: '.txt',
-            keep: true, // Keep the file so the action can read it
         });
         coreExports.setOutput('response-file', responseFile.name);
         if (modelResponse && modelResponse !== '') {
@@ -52668,6 +52670,18 @@ async function run() {
         // Force exit to prevent hanging on open connections
         process.exit(1);
     }
+    finally {
+        // Explicit cleanup of temporary file if it was created
+        if (responseFile) {
+            try {
+                responseFile.removeCallback();
+            }
+            catch (cleanupError) {
+                // Log cleanup errors but don't fail the action
+                coreExports.warning(`Failed to cleanup temporary file: ${cleanupError}`);
+            }
+        }
+    }
     // Force exit to prevent hanging on open connections
     process.exit(0);
 }