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/evals/evals/smoke.eval.ts

@@ -0,0 +1,18 @@
+import { expect } from "vitest";
+import { describeEval } from "vitest-evals";
+import { createPiCodingAgentHarness } from "../src/harness.ts";
+
+const harness = createPiCodingAgentHarness({ noTools: "all" });
+
+describeEval("Answer a basic prompt", { harness }, (it) => {
+	it("returns the expected answer", async ({ run }) => {
+		const result = await run("What's the capital of France? Respond with only the city name.");
+		expect(result.output.trim()).toBe("Paris");
+		expect(result.errors).toEqual([]);
+		expect(result.usage).toMatchObject({
+			provider: process.env.PI_PROVIDER,
+			model: process.env.PI_MODEL,
+		});
+		expect(result.usage.totalTokens).toBeGreaterThan(0);
+	});
+});