chore: migrate pi packages to earendil works scope

packages/coding-agent/test/sdk-openrouter-attribution.test.ts

@@ -7,7 +7,7 @@ import {
 	createAssistantMessageEventStream,
 	type Model,
 	type SimpleStreamOptions,
-} from "@mariozechner/pi-ai";
+} from "@earendil-works/pi-ai";
 import { afterEach, beforeEach, describe, expect, it } from "vitest";
 import { AuthStorage } from "../src/core/auth-storage.js";
 import { ModelRegistry } from "../src/core/model-registry.js";