Align Assistent debug patch extraction with string generate flags and unfenced JSON.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_debug_api.py

@@ -190,6 +190,17 @@ def test_extract_assistent_patch():
     assert got2["patch"]["steps"] == 8
     assert got2["patch"]["cfg"] == 2
 
+    str_flag = extract_assistent_patch(
+        'ok\n```json\n{"prompt":"a slender redhead in leather","generate":"true"}\n```'
+    )
+    assert str_flag["patch"]["generate"] is True
+
+    raw = extract_assistent_patch(
+        'done\n{"prompt":"a fiery redhead, street light, 85mm","generate":true}'
+    )
+    assert raw["patch"]["generate"] is True
+    assert raw["prose"] == "done"
+
 
 def test_chat_eval_mocked_http(monkeypatch, tmp_path):
     from gpu_rent import debug_assistent