feat(cli,display): add --health check and repo description column

Add --health option to verify Gitea connectivity and display version.
Add Description column (truncated at 40 chars) with --no-desc to hide
it. Add get_version() method to GiteaClient.

fixes #14
fixes #15

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_cli.py

@@ -26,7 +26,9 @@ class TestMainNominal:
 
         mock_client_cls.assert_called_once_with("http://localhost:3000", "test-token-123")
         mock_collect.assert_called_once_with(mock_client, include=None, exclude=None)
-        mock_render.assert_called_once_with(mock_collect.return_value, sort_key="name")
+        mock_render.assert_called_once_with(
+            mock_collect.return_value, sort_key="name", show_description=True
+        )
 
     @patch("gitea_dashboard.cli.render_dashboard")
     @patch("gitea_dashboard.cli.collect_all")
@@ -259,6 +261,96 @@ class TestParseArgsFormat:
             parse_args(["--format", "invalid"])
 
 
+class TestParseArgsHealth:
+    """Test --health argument parsing."""
+
+    def test_parse_args_health(self):
+        """--health sets health=True."""
+        from gitea_dashboard.cli import parse_args
+
+        args = parse_args(["--health"])
+        assert args.health is True
+
+    def test_parse_args_no_health_default(self):
+        """Without --health, health is False."""
+        from gitea_dashboard.cli import parse_args
+
+        args = parse_args([])
+        assert args.health is False
+
+
+class TestParseArgsNoDesc:
+    """Test --no-desc argument parsing."""
+
+    def test_parse_args_no_desc(self):
+        """--no-desc sets no_desc=True."""
+        from gitea_dashboard.cli import parse_args
+
+        args = parse_args(["--no-desc"])
+        assert args.no_desc is True
+
+    def test_parse_args_no_desc_default(self):
+        """Without --no-desc, no_desc is False."""
+        from gitea_dashboard.cli import parse_args
+
+        args = parse_args([])
+        assert args.no_desc is False
+
+
+class TestMainHealth:
+    """Test main() with --health."""
+
+    @patch("gitea_dashboard.cli.GiteaClient")
+    def test_main_health_success(self, mock_client_cls, capsys):
+        """--health displays version and repo count, exits normally."""
+        env = {"GITEA_TOKEN": "test-token"}
+        mock_client = MagicMock()
+        mock_client_cls.return_value = mock_client
+        mock_client.get_version.return_value = {"version": "1.21.0"}
+        mock_client.get_repos.return_value = [{"id": 1}, {"id": 2}, {"id": 3}]
+
+        with patch.dict("os.environ", env, clear=True):
+            main(["--health"])
+
+        captured = capsys.readouterr()
+        assert "Gitea v1.21.0" in captured.err
+        assert "3 repos accessibles" in captured.err
+
+    @patch("gitea_dashboard.cli.GiteaClient")
+    def test_main_health_connection_error(self, mock_client_cls):
+        """--health with connection error exits with code 1."""
+        env = {"GITEA_TOKEN": "test-token"}
+        mock_client = MagicMock()
+        mock_client_cls.return_value = mock_client
+        mock_client.get_version.side_effect = requests.ConnectionError("refused")
+
+        with patch.dict("os.environ", env, clear=True):
+            with pytest.raises(SystemExit) as exc_info:
+                main(["--health"])
+
+        assert exc_info.value.code == 1
+
+
+class TestMainNoDesc:
+    """Test main() with --no-desc."""
+
+    @patch("gitea_dashboard.cli.render_dashboard")
+    @patch("gitea_dashboard.cli.collect_all")
+    @patch("gitea_dashboard.cli.GiteaClient")
+    def test_main_passes_no_desc_to_render(self, mock_client_cls, mock_collect, mock_render):
+        """--no-desc passes show_description=False to render_dashboard."""
+        env = {"GITEA_TOKEN": "test-token"}
+        mock_client_cls.return_value = MagicMock()
+        mock_collect.return_value = []
+
+        with patch.dict("os.environ", env, clear=True):
+            main(["--no-desc"])
+
+        mock_render.assert_called_once_with(
+            mock_collect.return_value, sort_key="name", show_description=False
+        )
+
+
 class TestMainFormatJson:
     """Test main() with --format json."""