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/src/testing/index.ts

@@ -0,0 +1,27 @@
+export { createExpectAssertions, type ExpectLike } from "./assertions.ts";
+export { createEnvConformance } from "./env-conformance.ts";
+export { registerEnvConformance, registerStorageConformance, type StorageConformanceRunner } from "./runner.ts";
+export {
+	STORAGE_MEMORY_SCALES,
+	STORAGE_READ_BENCHMARKS,
+	STORAGE_WRITE_BENCHMARKS,
+	type StorageBenchmarkDataset,
+	type StorageBenchmarkScale,
+	type StorageReadBenchmark,
+	type StorageWriteBenchmark,
+	seedStorageBenchmark,
+	seedStorageWriteBenchmark,
+	storageBenchmarkPrimaryRecordCount,
+	TIMING_SCALE,
+} from "./storage-benchmark.ts";
+export { createStorageConformance } from "./storage-conformance.ts";
+export type {
+	EnvConformanceAssertions,
+	EnvConformanceCase,
+	EnvConformanceOptions,
+	EnvConformanceProvider,
+	StorageConformanceAssertions,
+	StorageConformanceCase,
+	StorageConformanceOptions,
+	StorageConformanceProvider,
+} from "./types.ts";