diff --git a/blobs/0x053feaf4b1fc6d912bb5377a784db2c81c651e1ef6bd80e78ce04a89dff04510 b/blobs/0x053feaf4b1fc6d912bb5377a784db2c81c651e1ef6bd80e78ce04a89dff04510
new file mode 100644
index 0000000..cde7b2b
--- /dev/null
+++ b/blobs/0x053feaf4b1fc6d912bb5377a784db2c81c651e1ef6bd80e78ce04a89dff04510
@@ -0,0 +1,56 @@
+diff --git a/core/providers/onnx.js b/core/providers/onnx.js
+index 8ce9a368f093760b73151763a34400785b8e8e6a..1a913926d06646556ed508385fc11fd78d279bad 100644
+--- a/core/providers/onnx.js
++++ b/core/providers/onnx.js
+@@ -52,7 +52,7 @@ 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
+diff --git a/tests/acceptance/4/criteria.test.js b/tests/acceptance/4/criteria.test.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..5f305d917aa94b15d3efe68a8b805f65a4315108
+--- /dev/null
++++ b/tests/acceptance/4/criteria.test.js
+@@ -0,0 +1,37 @@
++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(null, null, null, null)
++  assert.strictEqual(typeof chat.signal, 'function')
++  assert.strictEqual(chat.signal.default, 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 = (token) => {}
++  const mockChat = (token) => { mockOnToken(token) }
++  
++  // Test with no signal
++  const chatNoSignal = mod.chat(mockChat, null, null, null)
++  let onTokenCalledNoSignal = 0
++  chatNoSignal.onToken = (token) => { onTokenCalledNoSignal++; }
++  
++  // Simulate token generation
++  chatNoSignal.generate(1, 2, 3)
++  assert.strictEqual(onTokenCalledNoSignal, 3, 'Should call onToken for every token when no signal is provided')
++
++  // Test with aborted signal
++  let onTokenCalledAbortedSignal = 0
++  const abortedSignal = { abort: () => true }
++  const chatAbortedSignal = mod.chat(mockChat, null, null, abortedSignal)
++  chatAbortedSignal.onToken = (token) => { onTokenCalledAbortedSignal++; }
++  
++  // Simulate token generation
++  chatAbortedSignal.generate(1, 2, 3)
++  assert.strictEqual(onTokenCalledAbortedSignal, 0, 'Should never call onToken when signal is aborted')
++})
diff --git a/events/0000001605.json b/events/0000001605.json
new file mode 100644
index 0000000..6dd3b77
--- /dev/null
+++ b/events/0000001605.json
@@ -0,0 +1 @@
+{"data":{"envelope":{"delegation":{"identity":"0x8614d8302256cb50dd1125db7968aa8746fa38a5","nonce":"1792595072","project":"0x0000000000000000000000000000000000000000000000000000000000000000","scopes":3,"sessionX":"0x46c12ed42918e6daeb90a90caf1033d4230d7cfee40708c6f22768db352d9135","sessionY":"0x2d80da1c663617da8093b34d3194933331d7a6a73eb35cc19277683f3b9c4cef","validFrom":"1792595072","validUntil":"1793199872"},"delegationSignature":"0x2ff0f81e739f56f4a9ee3ba82ce159cd126d2d790209ede46be3022b2b81be731d7bbf7c44247f449f6581797dd19fb2cf49c916528408aaf9d7be62b09aa92b1b","kind":"session","signature":"0xae776f63cef74216a085f3b935d746a1900a747227625434a95a627e337f8d57670ca7d94a96b668437196285fbc54c41b39eabc5f3d72f0448b134c7deca680"},"message":{"attempts":3,"author":"0x8614d8302256cb50dd1125db7968aa8746fa38a5","baseCommit":"0x249c84685044f647868c4aa8df34a78a862bbd6b","goal":"Modify `core/providers/onnx.js` to accept a `signal` parameter in the `chat` function and respect it during token streaming.","issuedAt":"1792595420","itemId":"0xc061cbad52bed8ff95a90bbe778649684057e759d44b433dc318f7ba7fae0636","model":"litert:gemma-e4b","nonce":"1792595420000","notes":"Worked: The partial patch adds 1 file (tests/acceptance/4/criteria.test.js) and changes 1 file (core/providers/onnx.js); this attempt changed no file.\nBlocker: 3 turns in a row changed no file; Nothing was changed yet. Make the change the issue asks for.\nNext: Fix this and finish: Nothing was changed yet. Make the change the issue asks for..","parent":"0x0000000000000000000000000000000000000000000000000000000000000000","patchHash":"0x053feaf4b1fc6d912bb5377a784db2c81c651e1ef6bd80e78ce04a89dff04510","project":"0x16d6e75341c5f21003a4d9e89b416a545f7335094d7df139fd20942c9b7fb2de","status":2}},"eventHash":"0x0f3759c8b10dea849d38ffbc474cea70cca55540448beab5048a4f6affa091d7","gatewaySignature":"0xd9072ea0e4760b8bb597e04661977c52fe46a891082bac5c6700ea6b0d144fe80b658964c47b6ece01105470383c82e01da442824ec38653a08048fcea15cf9a1c","prev":"0x1a5cb9d96330e4ad5e09929ed83eefef55238f1fa0a71edc14ba3212d78f92e7","seq":1605,"ts":1792595421,"type":"progress","v":2}