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/compat-schema.test.ts

@@ -0,0 +1,40 @@
+import type { Static } from "typebox";
+import { Compile } from "typebox/compile";
+import { describe, expect, expectTypeOf, it } from "vitest";
+import {
+	AnthropicMessagesCompatSchema,
+	BedrockCompatSchema,
+	OpenAICompletionsCompatSchema,
+	OpenAIResponsesCompatSchema,
+	ProviderCompatSchema,
+} from "../src/providers/compat-schema.ts";
+
+type ProviderCompat = Static<typeof ProviderCompatSchema>;
+
+describe("compatibility schemas", () => {
+	it("preserves property types in the provider superset", () => {
+		expectTypeOf<ProviderCompat["supportsStore"]>().toEqualTypeOf<boolean | undefined>();
+		expectTypeOf<ProviderCompat["sessionAffinityFormat"]>().toEqualTypeOf<
+			"openai" | "openai-nosession" | "openrouter" | undefined
+		>();
+	});
+
+	it("preserves API-specific defaults", () => {
+		const completionsDefaults = Compile(OpenAICompletionsCompatSchema).Default({});
+		expect(completionsDefaults).not.toHaveProperty("thinkingFormat");
+		expect(completionsDefaults).not.toHaveProperty("supportsLongCacheRetention");
+		expect(Compile(OpenAIResponsesCompatSchema).Default({})).toMatchObject({ supportsDeveloperRole: true });
+		const anthropicDefaults = Compile(AnthropicMessagesCompatSchema).Default({});
+		expect(anthropicDefaults).not.toHaveProperty("sendSessionAffinityHeaders");
+		expect(anthropicDefaults).toMatchObject({ supportsLongCacheRetention: true });
+		expect(Compile(BedrockCompatSchema).Default({})).toMatchObject({ supportsStrictMode: false });
+	});
+
+	it("does not assign API-specific defaults to the provider superset", () => {
+		const defaults = Compile(ProviderCompatSchema).Default({});
+		expect(defaults).not.toHaveProperty("supportsDeveloperRole");
+		expect(defaults).not.toHaveProperty("sendSessionAffinityHeaders");
+		expect(defaults).not.toHaveProperty("supportsLongCacheRetention");
+		expect(defaults).not.toHaveProperty("supportsStrictMode");
+	});
+});