import { expect, it } from "@effect/vitest";import { Tool } from "effect/unstable/ai"; import { PreviewToolkit } from "./tools.ts"; const schemaHasDescription = (schema: unknown): boolean => {  if (!schema || typeof schema !== "object") return false;  const record = schema as Record<string, unknown>;  if (typeof record.description === "string" && record.description.length > 0) return true;  return [record.anyOf, record.oneOf, record.allOf]    .filter(Array.isArray)    .some((members) => members.some(schemaHasDescription));}; it("exports provider-compatible object schemas with described parameters", () => {  for (const tool of Object.values(PreviewToolkit.tools)) {    const schema = Tool.getJsonSchema(tool) as {      readonly type?: unknown;      readonly properties?: Readonly<Record<string, unknown>>;      readonly anyOf?: unknown;      readonly oneOf?: unknown;    };    expect(      tool.description?.length ?? 0,      `${tool.name} should have a useful description`,    ).toBeGreaterThan(40);    expect(schema.type, `${tool.name} must export a top-level object schema`).toBe("object");    expect(schema.anyOf, `${tool.name} must not export a root anyOf`).toBeUndefined();    expect(schema.oneOf, `${tool.name} must not export a root oneOf`).toBeUndefined();    for (const [field, fieldSchema] of Object.entries(schema.properties ?? {})) {      expect(        schemaHasDescription(fieldSchema),        `${tool.name}.${field} should explain what data the agent must pass`,      ).toBe(true);    }  }});