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/scripts/coding-agent-smoke.test.mjs

@@ -0,0 +1,63 @@
+import assert from "node:assert/strict";
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { dirname, join } from "node:path";
+import test from "node:test";
+import { installConsumer } from "./local-package-install.mjs";
+import { produceArtifactSet } from "./package-artifacts.mjs";
+import { codingAgentName, smokeTestCodingAgent } from "./coding-agent-smoke.mjs";
+
+function writePackage(directory, manifest, files) {
+	mkdirSync(directory, { recursive: true });
+	writeFileSync(join(directory, "package.json"), `${JSON.stringify(manifest, null, "\t")}\n`);
+	for (const [path, content] of Object.entries(files)) {
+		mkdirSync(dirname(join(directory, path)), { recursive: true });
+		writeFileSync(join(directory, path), content);
+	}
+}
+
+function createFixture(t, { importUndeclared = false } = {}) {
+	const temporaryRoot = mkdtempSync(join(tmpdir(), "pi-coding-agent-smoke-test-"));
+	t.after(() => rmSync(temporaryRoot, { recursive: true, force: true }));
+	const root = join(temporaryRoot, "fixture with spaces");
+	const repoRoot = join(root, "repo");
+	mkdirSync(repoRoot, { recursive: true });
+	writeFileSync(join(repoRoot, "package.json"), '{"name":"fixture","private":true}\n');
+	writePackage(
+		join(repoRoot, "packages", codingAgentName.split("/")[1]),
+		{
+			name: codingAgentName,
+			version: "1.0.0",
+			type: "module",
+			main: "./dist/index.js",
+			types: "./dist/index.d.ts",
+			exports: { ".": { types: "./dist/index.d.ts", import: "./dist/index.js" } },
+			files: ["dist"],
+			bin: { pi: "dist/bundle/cli.js" },
+		},
+		{
+			"dist/index.js": `${importUndeclared ? 'import "@earendil-works/undeclared";' : ""}
+export function createAgentSession() {}
+export class SessionManager { static inMemory() {} }
+export class ModelRuntime { static create() {} }
+`,
+			"dist/index.d.ts": "export {};\n",
+			"dist/cli.js": 'console.log("1.0.0");\n',
+			"dist/bundle/cli.js": 'console.log("1.0.0");\n',
+		},
+	);
+	const artifactSet = produceArtifactSet({ build: false, outDir: join(root, "artifacts"), repoRoot, source: null });
+	const directory = join(root, "consumer");
+	installConsumer({ artifactSet, directory, packageNames: [codingAgentName] });
+	return directory;
+}
+
+test("accepts a valid coding-agent package", (t) => {
+	smokeTestCodingAgent(createFixture(t));
+});
+
+// #9132: smoke-test the public SDK, not just a bundled CLI that hides missing imports.
+test("fails when the SDK imports an undeclared package despite a working CLI", (t) => {
+	const directory = createFixture(t, { importUndeclared: true });
+	assert.throws(() => smokeTestCodingAgent(directory), /Cannot find package '@earendil-works\/undeclared'/);
+});