fix: add cuInit(0) for CUDA driver API

tests/unit/test_tma_desc_debug.cu

@@ -10,6 +10,9 @@
 typedef unsigned short bf16_t;
 
 int main() {
+    // Initialize CUDA driver API — REQUIRED before any cuTensorMap calls
+    cuInit(0);
+
     printf("=== TMA Descriptor Creation Test ===\n");
 
     bf16_t* d_data;