import { expect } from "@effect/vitest";import { Effect } from "effect"; import { scenario } from "../src/scenario";import { Mcp, Target } from "../src/services"; const PNG_DATA =  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4nGP4z8DwHwAFAAH/iZk9HQAAAABJRU5ErkJggg==";const PNG_DATA_URL = `data:image/png;base64,${PNG_DATA}`; scenario(  "Codemode · output helpers emit images, detail metadata, and notifications",  {},  Effect.gen(function* () {    const target = yield* Target;    const mcp = yield* Mcp;    const identity = yield* target.newIdentity();    const session = mcp.session(identity);     const result = yield* session.call("execute", {      code: [        'text("helper caption");',        `image(${JSON.stringify(PNG_DATA_URL)}, "original");`,        `image({ image_url: ${JSON.stringify(PNG_DATA_URL)}, detail: "low" });`,        'notify({ message: "rendered previews", data: { count: 2 } });',        "return {",        '  value: "structured return",',        "  toolKeys: {",        "    root: Object.keys(tools),",        "    describe: Object.keys(tools.describe),",        "    executor: Object.keys(tools.executor),",        "    sources: Object.keys(tools.executor.sources),",        "  },",        "};",      ].join("\n"),    });     expect(result.ok, `execute completed (got: ${result.text.slice(0, 300)})`).toBe(true);     const raw = result.raw as {      content?: ReadonlyArray<Record<string, unknown>>;      structuredContent?: Record<string, unknown>;    };    const content = raw.content ?? [];    expect(result.text, "text() reaches the user-visible MCP text stream").toContain(      "helper caption",    );    expect(result.text, "notify() renders as a distinct visible notification").toContain(      "Notification: rendered previews",    );     const images = content.filter((block) => block.type === "image");    expect(images, "image() emits two MCP image blocks").toHaveLength(2);    expect(images[0], "data URI image is converted to MCP image content").toMatchObject({      type: "image",      data: PNG_DATA,      mimeType: "image/png",      _meta: { "codex/imageDetail": "original" },    });    expect(images[1], "image_url object detail is preserved").toMatchObject({      type: "image",      data: PNG_DATA,      mimeType: "image/png",      _meta: { "codex/imageDetail": "low" },    });     expect(raw.structuredContent?.result, "return value stays model-visible").toEqual({      value: "structured return",      toolKeys: {        root: ["search", "describe", "executor"],        describe: ["tool"],        executor: ["sources"],        sources: ["list"],      },    });    expect(raw.structuredContent?.notifications, "notifications are structured too").toEqual([      { message: "rendered previews", data: { count: 2 } },    ]);  }),);