diff --git a/blobs/0x98af035f57711bbdcc3d181cc3537d31b579188966b1f46602f1206ee363fbb2 b/blobs/0x98af035f57711bbdcc3d181cc3537d31b579188966b1f46602f1206ee363fbb2
new file mode 100644
index 0000000..8ac9036
--- /dev/null
+++ b/blobs/0x98af035f57711bbdcc3d181cc3537d31b579188966b1f46602f1206ee363fbb2
@@ -0,0 +1,84 @@
+diff --git a/core/providers/onnx.js b/core/providers/onnx.js
+index 8ce9a368f093760b73151763a34400785b8e8e6a..030a641ebef382e947cfc1834a95383440eb0602 100644
+--- a/core/providers/onnx.js
++++ b/core/providers/onnx.js
+@@ -52,18 +52,18 @@ export async function unload() {
+   generator = null; cargadoKey = null;
+ }
+ 
+-export async function chat(history, system, onToken = () => {}) {
++export async function chat(history, system, onToken = () => {}, signal = null) {
+   if (!generator) throw new Error('Modelo no cargado');
+   // ACE-lite: eviction por relevancia. Presupuesto amplio (LFM2.5 aguanta
+   // contexto largo); el tope POR MENSAJE (context.js) evita que un README
+   // gigante dispare «Too many tokens requested».
+   const messages = [{ role: 'system', content: system }, ...(await packHistoryAsync(history, 5000))];
+-  const streamer = new TextStreamer(generator.tokenizer, {
++  const streamer = new TextStreamer(generator.tokenizer, { signal, 
+     skip_prompt: true,
+     skip_special_tokens: true,
+     callback_function: onToken,
+   });
+-  const out = await generator(messages, {
++  const out = await generator(messages, { signal, 
+     max_new_tokens: 1024,
+     do_sample: false,          // determinista: los tool calls JSON lo agradecen
+     repetition_penalty: 1.1,
+diff --git a/tests/acceptance/4/CRITERIA.json b/tests/acceptance/4/CRITERIA.json
+new file mode 100644
+index 0000000000000000000000000000000000000000..3a97ed53aa613c00362b16b8dc06e2450176b508
+--- /dev/null
++++ b/tests/acceptance/4/CRITERIA.json
+@@ -0,0 +1,18 @@
++{
++  "schema": "elffuss-t2t/criteria@2",
++  "issue": 4,
++  "criteria": [
++    {
++      "index": 1,
++      "tests": [
++        "tests/acceptance/4/criteria.test.js::criterion 1"
++      ]
++    },
++    {
++      "index": 2,
++      "tests": [
++        "tests/acceptance/4/criteria.test.js::criterion 2"
++      ]
++    }
++  ]
++}
+diff --git a/tests/acceptance/4/criteria.test.js b/tests/acceptance/4/criteria.test.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..b98a05be0ba70bfb9e220bdbcc6e8bb7a66a8bae
+--- /dev/null
++++ b/tests/acceptance/4/criteria.test.js
+@@ -0,0 +1,28 @@
++import { test } from 'node:test'
++import assert from 'node:assert/strict'
++import { readFileSync } from 'node:fs'
++import * as mod from '../../../core/providers/onnx.js' // the code under test: call it as mod.<name>(...)
++const source = readFileSync(new URL('../../../core/providers/onnx.js', import.meta.url), 'utf8') // the text of core/providers/onnx.js, for a criterion about how the file is written
++
++test('criterion 1', () => {
++  // The `chat` function of core/providers/onnx.js declares a fourth parameter named `signal` with default `null`.
++  const chat = mod.chat(1, 2, 3, null)
++  assert.strictEqual(chat.signal, null)
++})
++
++test('criterion 2', () => {
++  // With an aborted `signal`, `chat` never calls `onToken`, and with no `signal` it still calls `onToken` for every token.
++  const mockOnToken = assert.fn()
++  const chatWithSignal = mod.chat(1, 2, 3, { abort: true }, mockOnToken)
++  const chatWithoutSignal = mod.chat(1, 2, 3, undefined, mockOnToken)
++
++  // Test with aborted signal
++  const resultWithSignal = chatWithSignal()
++  assert.strictEqual(resultWithSignal, undefined)
++  assert.strictEqual(mockOnToken.callCount, 0)
++
++  // Test without signal
++  const resultWithoutSignal = chatWithoutSignal()
++  assert.strictEqual(resultWithoutSignal, undefined)
++  assert.strictEqual(mockOnToken.callCount, 1)
++})
diff --git a/events/0000001125.json b/events/0000001125.json
new file mode 100644
index 0000000..cea4c82
--- /dev/null
+++ b/events/0000001125.json
@@ -0,0 +1 @@
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