fix(config): name malformed local identity errors

cocoscreator_projects/framework-tests/config/local-startup.test.ts

@@ -141,6 +141,24 @@ test('context validator rejects forged config fields and malformed identity', ()
   );
 });
 
+test('context validator names identity when a forged context omits the identity object', () => {
+  const base = validContext();
+  for (const identity of [null, undefined]) {
+    assert.throws(
+      () => assertLocalStartupContext({
+        ...base,
+        config: { ...base.config, identity },
+      } as unknown as LocalStartupContext),
+      (error: unknown) => {
+        assert.ok(error instanceof Error);
+        assert.match(error.message, /identity/i);
+        assert.ok((error as Error & { cause?: unknown }).cause instanceof Error);
+        return true;
+      },
+    );
+  }
+});
+
 test('connection target must be a valid URL from the authoritative local profile', () => {
   const context = validContext();
   assert.doesNotThrow(() => assertLocalConnectionTarget(context, 'ws://127.0.0.1:3088'));