fix: align pi-ai payload hooks

src/agents/pi-tools.workspace-only-false.test.ts

@@ -7,11 +7,14 @@ vi.mock("@mariozechner/pi-ai", async (importOriginal) => {
   const original = await importOriginal<typeof import("@mariozechner/pi-ai")>();
   return {
     ...original,
-    getOAuthApiKey: () => undefined,
-    getOAuthProviders: () => [],
   };
 });
 
+vi.mock("@mariozechner/pi-ai/oauth", () => ({
+  getOAuthApiKey: () => undefined,
+  getOAuthProviders: () => [],
+}));
+
 import { createOpenClawCodingTools } from "./pi-tools.js";
 
 describe("FS tools with workspaceOnly=false", () => {