fix: use BLAKE3 intrinsics for Windows Bazel

Co-authored-by: Codex noreply@openai.com

MODULE.bazel

@@ -210,6 +210,18 @@ crate.from_cargo(
     use_experimental_platforms = True,
 )
 
+# BLAKE3 normally builds hand-written assembly on x86_64. In the Windows GNU
+# cross configuration, that archive is produced by the build script but is not
+# propagated to the Rust link action. Prefer BLAKE3's equivalent Rust
+# intrinsics implementation for the affected targets so every Rust crate that
+# transitively uses BLAKE3 remains buildable under Windows linting.
+crate.annotation(
+    crate = "blake3",
+    crate_features_select = {
+        "x86_64-pc-windows-gnullvm": ["prefer_intrinsics"],
+    },
+)
+
 bazel_dep(name = "zstd", version = "1.5.7")
 
 crate.annotation(