chore(vendor): import pi 0.85.1

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

third_party/pi/packages/ai/src/bedrock-provider.ts

@@ -0,0 +1,6 @@
+import { stream, streamSimple } from "./api/bedrock-converse-stream.ts";
+
+export const bedrockProviderModule = {
+	stream,
+	streamSimple,
+};