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/fetch-option.test.ts

@@ -9,11 +9,12 @@ import { streamSimple as streamOpenAICompletions } from "../src/api/openai-compl
 import { streamSimple as streamOpenAIResponses } from "../src/api/openai-responses.ts";
 import { generateImages } from "../src/api/openrouter-images.ts";
 import { streamSimple as streamPiMessages } from "../src/api/pi-messages.ts";
-import type { Api, Context, FetchFunction, ImagesModel, Model } from "../src/types.ts";
+import type { Api, FetchFunction, ImageModel, Model } from "../src/types.ts";
+import { normalizeContext } from "../src/utils/transcript.ts";
 
-const context: Context = {
+const context = normalizeContext({
 	messages: [{ role: "user", content: "hello", timestamp: 1 }],
-};
+});
 
 function createModel<TApi extends Api>(api: TApi): Model<TApi> {
 	return {
@@ -159,8 +160,9 @@ describe("fetch stream option", () => {
 
 	it("uses fetch for image generation", async () => {
 		const { custom, fallback } = mockFetches();
-		const model: ImagesModel<"openrouter-images"> = {
+		const model: ImageModel<"openrouter-images"> = {
 			...createModel("openrouter-images"),
+			type: "image",
 			provider: "openrouter",
 			output: ["image"],
 		};