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/durable/vitest.config.ts

@@ -0,0 +1,20 @@
+import { fileURLToPath } from "node:url";
+import { defineConfig } from "vitest/config";
+
+const durableSrcIndex = fileURLToPath(new URL("./src/index.ts", import.meta.url));
+const durableSrcTesting = fileURLToPath(new URL("./src/testing/index.ts", import.meta.url));
+
+export default defineConfig({
+	test: {
+		environment: "node",
+		setupFiles: ["./test/setup-document-retention.ts"],
+	},
+	resolve: {
+		conditions: ["source"],
+		alias: [
+			{ find: /^@earendil-works\/pi-durable$/, replacement: durableSrcIndex },
+			{ find: /^@earendil-works\/pi-durable\/testing$/, replacement: durableSrcTesting },
+		],
+	},
+	ssr: { resolve: { conditions: ["source"] } },
+});