Add nightly test support to unified run_suite.py (#13941)

test/nightly/test_encoder_dp.py

@@ -9,6 +9,7 @@ import unittest
 from types import SimpleNamespace
 
 from sglang.srt.utils import kill_process_tree
+from sglang.test.ci.ci_register import register_cuda_ci
 from sglang.test.test_utils import (
     DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
     DEFAULT_URL_FOR_TEST,
@@ -17,6 +18,8 @@ from sglang.test.test_utils import (
     popen_launch_server,
 )
 
+register_cuda_ci(est_time=500, suite="nightly-4-gpu", nightly=True)
+
 MODELS = [
     SimpleNamespace(model="Qwen/Qwen2.5-VL-72B-Instruct", mmmu_accuracy=0.55),
     SimpleNamespace(model="OpenGVLab/InternVL2_5-8B", mmmu_accuracy=0.52),