feat: add agent-first minitool studio MVP

tests/cleanup.test.ts

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+import assert from "node:assert/strict";
+import test from "node:test";
+import { isProjectIdle } from "../lib/cleanup";
+
+test("marks only projects beyond the configured idle window", () => {
+  const now = Date.parse("2026-09-17T12:00:00.000Z");
+  assert.equal(isProjectIdle("2026-09-16T11:59:59.000Z", 24, now), true);
+  assert.equal(isProjectIdle("2026-09-16T12:00:01.000Z", 24, now), false);
+  assert.equal(isProjectIdle("not-a-date", 24, now), false);
+});

tests/validation.test.ts

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+import assert from "node:assert/strict";
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import test from "node:test";
+import { validateArtifact } from "../lib/validation";
+
+async function fixture(files: Record<string, string>) {
+  const root = await fs.mkdtemp(path.join(os.tmpdir(), "rednote-validator-"));
+  for (const [name, content] of Object.entries(files)) {
+    const target = path.join(root, name);
+    await fs.mkdir(path.dirname(target), { recursive: true });
+    await fs.writeFile(target, content);
+  }
+  return root;
+}
+
+test("accepts a minimal offline artifact", async (t) => {
+  const root = await fixture({
+    "index.html": '<!doctype html><html lang="zh-CN"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover"><link rel="stylesheet" href="./assets/style.css"></head><body><script src="./assets/main.js"></script></body></html>',
+    "assets/main.js": 'document.body.addEventListener("click", function () {});',
+    "assets/style.css": "body { color: #333; }",
+  });
+  t.after(() => fs.rm(root, { recursive: true, force: true }));
+  const report = await validateArtifact(root);
+  assert.equal(report.status, "passed");
+  assert.match(report.auditOutput, /PASS/);
+});
+
+test("reports forbidden APIs, inline handlers and missing resources", async (t) => {
+  const root = await fixture({
+    "index.html": '<!doctype html><html><body><img src="./missing.png"><button onclick="go()">go</button><script src="./main.js"></script></body></html>',
+    "main.js": 'fetch("/api");',
+  });
+  t.after(() => fs.rm(root, { recursive: true, force: true }));
+  const report = await validateArtifact(root);
+  const codes = report.issues.map((issue) => issue.code);
+  assert.equal(report.status, "failed");
+  assert.ok(codes.includes("NETWORK_FETCH"));
+  assert.ok(codes.includes("INLINE_EVENT"));
+  assert.ok(codes.includes("MISSING_RESOURCE"));
+});