eslint for handlers

eslint.config.js

@@ -66,6 +66,22 @@ export default [
     },
   },
 
+  // Handler files configuration
+  {
+    files: ['**/*.handler.ts'],
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_|Handler$', // Ignore classes ending with Handler
+          destructuredArrayIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_',
+        },
+      ],
+    },
+  },
+
   // Test files configuration
   {
     files: ['**/*.test.ts', '**/*.spec.ts', '**/test/**/*', '**/tests/**/*'],