chore: add Vitest scaffolding and sync package.json to v2.2.3

tests-ts/tool-response.test.ts

@@ -0,0 +1,45 @@
+import { describe, it, expect } from "vitest";
+import { formatKicadResult } from "../src/tools/tool-response.js";
+
+describe("formatKicadResult", () => {
+  it("wraps a successful object result as JSON text content", () => {
+    const response = formatKicadResult({ success: true, value: 42 });
+    expect(response.content).toEqual([
+      { type: "text", text: JSON.stringify({ success: true, value: 42 }) },
+    ]);
+    expect(response.isError).toBeUndefined();
+  });
+
+  it("flags isError when the KiCAD payload reports success=false", () => {
+    const response = formatKicadResult({ success: false, error: "boom" });
+    expect(response.isError).toBe(true);
+    expect(response.content[0].text).toBe(JSON.stringify({ success: false, error: "boom" }));
+  });
+
+  it("does not flag isError for payloads without a success field", () => {
+    const response = formatKicadResult({ data: [1, 2, 3] });
+    expect(response.isError).toBeUndefined();
+  });
+
+  it("does not flag isError for success=true", () => {
+    const response = formatKicadResult({ success: true });
+    expect(response.isError).toBeUndefined();
+  });
+
+  it("does not flag isError when success is a truthy non-false value", () => {
+    const response = formatKicadResult({ success: "ok" });
+    expect(response.isError).toBeUndefined();
+  });
+
+  it("handles string results", () => {
+    const response = formatKicadResult("hello");
+    expect(response.content[0].text).toBe(JSON.stringify("hello"));
+    expect(response.isError).toBeUndefined();
+  });
+
+  it("handles null without throwing", () => {
+    const response = formatKicadResult(null);
+    expect(response.content[0].type).toBe("text");
+    expect(response.isError).toBeUndefined();
+  });
+});