chore: import upstream snapshot with attribution

tests/unit/cli-clipboard.test.ts

@@ -0,0 +1,31 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+test("clipboard.mjs pode ser importado sem erro", async () => {
+  const mod = await import("../../bin/cli/utils/clipboard.mjs");
+  assert.equal(typeof mod.copyToClipboard, "function");
+  assert.equal(typeof mod.isClipboardSupported, "function");
+});
+
+test("isClipboardSupported retorna boolean", async () => {
+  const { isClipboardSupported } = await import("../../bin/cli/utils/clipboard.mjs");
+  const result = isClipboardSupported();
+  assert.ok(typeof result === "boolean");
+});
+
+test("copyToClipboard retorna boolean (true em macOS/win, qualquer em Linux)", async () => {
+  const { copyToClipboard } = await import("../../bin/cli/utils/clipboard.mjs");
+  const result = copyToClipboard("test-text");
+  assert.ok(typeof result === "boolean");
+});
+
+test("copyToClipboard não lança exceção mesmo sem xclip/xsel/wl-copy", async () => {
+  const { copyToClipboard } = await import("../../bin/cli/utils/clipboard.mjs");
+  let threw = false;
+  try {
+    copyToClipboard("some text");
+  } catch {
+    threw = true;
+  }
+  assert.ok(!threw);
+});