added into generated client response handlers

README.md

@@ -240,16 +240,29 @@ You can also download generated frontend clients:
 
 Both generated clients support a shared Bearer token helper. Call `bearerSet(token)` once, the token is stored in `localStorage` under `apilite_bearer_token`, and subsequent requests automatically send `Authorization: Bearer ...`.
 
+Both generated clients also support response hooks:
+
+* `addResponseHandler(handler)` registers a handler called for every API response.
+* `addErrorHandler(handler)` registers a handler called only when the API response has `status === 'ERROR'`.
+* Both methods return an unsubscribe function.
+* Handlers receive `(response, context)`, where `context` contains `method`, `data`, and `httpStatus`.
+* Handler exceptions are ignored, so they do not change the original API callback or promise result.
+
 JavaScript usage example:
 
 ```js
 import backend from './backend.js';
 
 backend.bearerSet('your-access-token');
+const removeErrorHandler = backend.addErrorHandler((response, context) => {
+	console.error(context.method, response.msg);
+});
 
 backend.add(1, 2).then((response) => {
 	console.log(response.data);
 });
+
+// removeErrorHandler();
 ```
 
 TypeScript usage example (Vue + TS):
@@ -258,10 +271,15 @@ TypeScript usage example (Vue + TS):
 import backend from './backend';
 
 backend.bearerSet('your-access-token');
+const removeResponseHandler = backend.addResponseHandler((response, context) => {
+	console.log(context.httpStatus, response.status);
+});
 
 backend.add(1, 2).then((response) => {
 	console.log(response.data); // typed value based on PHP return type
 });
+
+// removeResponseHandler();
 ```
 
 If a method return type is a PHP class with public properties, JSON help now also includes `return_structure`, and the generated TypeScript client maps that class to an object shape based on those public properties.