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/env/test/daemon.ts

@@ -0,0 +1,13 @@
+import { existsSync } from "node:fs";
+import { resolve } from "node:path";
+
+/**
+ * The daemon the tests run: `PI_ENV_DAEMON` (CI points it at release builds), else the one `cargo build` built in
+ * ../daemon.
+ */
+export const daemon =
+	process.env.PI_ENV_DAEMON ??
+	resolve(import.meta.dirname, `../daemon/target/debug/pi-env${process.platform === "win32" ? ".exe" : ""}`);
+if (!existsSync(daemon)) {
+	throw new Error(`Build the daemon first: npm run build:daemon in packages/env (missing ${daemon})`);
+}