[NPU]add nightly-test-npu (#14143)

python/sglang/test/ci/ci_register.py

@@ -11,6 +11,7 @@ __all__ = [
     "register_cpu_ci",
     "register_cuda_ci",
     "register_amd_ci",
+    "register_npu_ci",
     "ut_parse_one_file",
 ]
 
@@ -22,6 +23,7 @@ class HWBackend(Enum):
     CPU = auto()
     CUDA = auto()
     AMD = auto()
+    NPU = auto()
 
 
 @dataclass
@@ -58,10 +60,21 @@ def register_amd_ci(
     return None
 
 
+def register_npu_ci(
+    est_time: float,
+    suite: str,
+    nightly: bool = False,
+    disabled: Optional[str] = None,
+):
+    """Marker for NPU CI registration (parsed via AST; runtime no-op)."""
+    return None
+
+
 REGISTER_MAPPING = {
     "register_cpu_ci": HWBackend.CPU,
     "register_cuda_ci": HWBackend.CUDA,
     "register_amd_ci": HWBackend.AMD,
+    "register_npu_ci": HWBackend.NPU,
 }