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/openai-completions-cache-control-format.test.ts

@@ -1,7 +1,7 @@
 import { Type } from "typebox";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import { stream as streamOpenAICompletions } from "../src/api/openai-completions.ts";
-import { getModel } from "../src/compat.ts";
+import { getModel, normalizeContext } from "../src/compat.ts";
 import type { Message, Model } from "../src/types.ts";
 
 interface CacheControl {
@@ -80,7 +80,7 @@ async function capturePayload(
 
 	await streamOpenAICompletions(
 		model,
-		{
+		normalizeContext({
 			systemPrompt: "System prompt",
 			messages: messages ?? [{ role: "user", content: "Hello", timestamp }],
 			tools: [
@@ -92,7 +92,7 @@ async function capturePayload(
 					}),
 				},
 			],
-		},
+		}),
 		{ apiKey: "test-key", ...options },
 	).result();