add git diffs and permission support

e2e/global-teardown.ts

@@ -1,6 +1,22 @@
 import { stopServers } from './server-utils.js';
+import { unlinkSync } from 'fs';
+import { homedir } from 'os';
+import { join } from 'path';
+
+function cleanupTestFiles() {
+  const testFile = join(homedir(), 'foo.md');
+  try {
+    unlinkSync(testFile);
+    console.log('Cleaned up test file:', testFile);
+  } catch {
+    // File doesn't exist, ignore
+  }
+}
 
 export default async function globalTeardown() {
+  // Clean up test files
+  cleanupTestFiles();
+
   // Skip if servers are managed externally (e.g., by scripts/test)
   if (process.env.SKIP_SERVER_SETUP) {
     console.log('\n=== Skipping server teardown (SKIP_SERVER_SETUP is set) ===\n');