import { describe, expect, it } from "@effect/vitest"; import { deriveThreadTitleSeed } from "./threadTitle.ts"; describe("deriveThreadTitleSeed", () => {  it("prefers normalized message text", () => {    expect(      deriveThreadTitleSeed({        text: "  Investigate\n  login   failures  ",        attachments: [{ name: "login-error.png" }],        fallbackLabels: ["Terminal 1"],      }),    ).toBe("Investigate login failures");  });   it("uses the first attachment name when text is empty", () => {    expect(      deriveThreadTitleSeed({        text: " \n ",        attachments: [{ name: "login-error.png" }, { name: "other.png" }],      }),    ).toBe("Image: login-error.png");  });   it("uses the first non-empty fallback label after text and attachments", () => {    expect(      deriveThreadTitleSeed({        text: "",        attachments: [],        fallbackLabels: [null, "  ", "Terminal 1"],      }),    ).toBe("Terminal 1");  });   it("falls back to New thread", () => {    expect(deriveThreadTitleSeed({ text: "", attachments: [] })).toBe("New thread");  });   it("applies the shared title truncation", () => {    expect(      deriveThreadTitleSeed({        text: "x".repeat(60),        attachments: [],      }),    ).toBe(`${"x".repeat(50)}...`);  });});