fix(vecadd): link advapi32 for windows nanorand

Made-with: Cursor

Author: CharryWu

examples/vecadd/build.rs

@@ -4,6 +4,12 @@ use std::path;
 use cuda_builder::CudaBuilder;
 
 fn main() {
+    // On Windows, nanorand's entropy uses SystemFunction036 (RtlGenRandom) from advapi32.
+    // Explicitly link it so the MSVC linker resolves the symbol (avoids LNK2019 when
+    // mixing CRTs or with certain link orders).
+    #[cfg(target_os = "windows")]
+    println!("cargo:rustc-link-lib=advapi32");
+
     println!("cargo::rerun-if-changed=build.rs");
     println!("cargo::rerun-if-changed=kernels");