chore(vendor): import pi 1.3.0

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: 71023aec1546d6d677a65669c5665c0927ce0dd0

third_party/pi/packages/ai/test/google-vertex-api-key-resolution.test.ts

@@ -47,14 +47,14 @@ vi.mock("@google/genai", () => {
 });
 
 import { stream as streamGoogleVertex } from "../src/api/google-vertex.ts";
-import { getModel } from "../src/compat.ts";
-import type { Context, Model } from "../src/types.ts";
+import { getModel, normalizeContext } from "../src/compat.ts";
+import type { Model } from "../src/types.ts";
 
 const PI_USER_AGENT = `pi (${platform()} ${release()}; ${arch()})`;
 const model = getModel("google-vertex", "gemini-3-flash-preview");
-const context: Context = {
+const context = normalizeContext({
 	messages: [{ role: "user", content: "hello", timestamp: Date.now() }],
-};
+});
 
 const originalGoogleCloudApiKey = process.env.GOOGLE_CLOUD_API_KEY;