[CI] Rename basic CI stage-a/b/c -> base-a/b/c for symmetry with extra CI (#25420)

test/registered/rl/test_fp32_lm_head.py

@@ -15,7 +15,7 @@ from sglang.srt.server_args import (
 from sglang.srt.utils import get_device
 from sglang.test.ci.ci_register import register_amd_ci, register_cuda_ci
 
-register_cuda_ci(est_time=9, stage="stage-b", runner_config="1-gpu-small")
+register_cuda_ci(est_time=9, stage="base-b", runner_config="1-gpu-small")
 register_amd_ci(est_time=15, suite="stage-b-test-1-gpu-small-amd")
 
 

test/registered/rl/test_patch_torch.py

@@ -9,7 +9,7 @@ import torch.multiprocessing as mp
 from sglang.srt.utils.patch_torch import monkey_patch_torch_reductions
 from sglang.test.ci.ci_register import register_cuda_ci
 
-register_cuda_ci(est_time=15, stage="stage-b", runner_config="2-gpu-large")
+register_cuda_ci(est_time=15, stage="base-b", runner_config="2-gpu-large")
 
 
 class TestReleaseMemoryOccupation(unittest.TestCase):

test/registered/rl/test_pause_generation_tensor_consistency.py

@@ -9,7 +9,7 @@ import torch
 from sglang.test.ci.ci_register import register_cpu_ci
 from sglang.test.test_utils import CustomTestCase
 
-register_cpu_ci(est_time=7, suite="stage-a-test-cpu")
+register_cpu_ci(est_time=7, suite="base-a-test-cpu")
 
 
 # ---------------------------------------------------------------------------

test/registered/rl/test_release_memory_occupation.py

@@ -55,7 +55,7 @@ from sglang.test.test_utils import (
 
 register_cuda_ci(
     est_time=200,
-    stage="stage-c",
+    stage="base-c",
     runner_config="4-gpu-h100",
     disabled="Temporarily disabled - needs investigation",
 )

test/registered/rl/test_update_weights_from_disk.py

@@ -22,7 +22,7 @@ register_amd_ci(
     est_time=210, suite="stage-b-test-1-gpu-small-amd", disabled="see #14021"
 )
 register_cuda_ci(
-    est_time=210, stage="stage-b", runner_config="1-gpu-large", disabled="see #14021"
+    est_time=210, stage="base-b", runner_config="1-gpu-large", disabled="see #14021"
 )