test(examples): guard generated command docs

Prevent canonical example docs from regressing to lower-level generated handle/EffectBatch wording after moving README copy to the generated-resource command path.

req: dx/006

req: examples/003

slhx-test/tests/examples_contract.rs

@@ -112,8 +112,10 @@ fn canonical_example_docs_do_not_teach_low_level_plumbing() {
     let root = Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap();
     let examples = root.join("examples");
     let forbidden = [
+        "generated handles and slots",
         "generated handle ids",
         "numeric handle ids",
+        "EffectBatch responses",
         "manual registry",
         "HandlerRegistry",
         "InteractionForm",