feat: web.py CLI (search/scrape) with nonzero exit on failure

tests/test_web.py

@@ -133,3 +133,39 @@ def test_scrape_raises_on_empty_markdown(monkeypatch):
                         lambda url, **kw: {"success": True, "data": {"markdown": ""}})
     with pytest.raises(web.WebToolsError):
         web.scrape("http://a")
+
+
+def test_main_search_json(monkeypatch, capsys):
+    monkeypatch.setattr(web, "search",
+                        lambda q, max_results=12: [{"title": "T", "url": "http://u",
+                                                    "snippet": "s", "engine": "e"}])
+    rc = web.main(["search", "demons", "--max", "5", "--json"])
+    assert rc == 0
+    out = capsys.readouterr().out
+    assert json.loads(out) == [{"title": "T", "url": "http://u",
+                                "snippet": "s", "engine": "e"}]
+
+
+def test_main_scrape_to_stdout(monkeypatch, capsys):
+    monkeypatch.setattr(web, "scrape", lambda url: "# Page")
+    rc = web.main(["scrape", "http://a"])
+    assert rc == 0
+    assert "# Page" in capsys.readouterr().out
+
+
+def test_main_scrape_to_file(monkeypatch, tmp_path):
+    monkeypatch.setattr(web, "scrape", lambda url: "# Saved")
+    out = tmp_path / "p.md"
+    rc = web.main(["scrape", "http://a", "--out", str(out)])
+    assert rc == 0
+    assert out.read_text(encoding="utf-8") == "# Saved"
+
+
+def test_main_returns_1_on_error(monkeypatch, capsys):
+    def boom(*a, **k):
+        raise web.WebToolsError("nope")
+
+    monkeypatch.setattr(web, "search", boom)
+    rc = web.main(["search", "x"])
+    assert rc == 1
+    assert "error:" in capsys.readouterr().err