DEVX-7: fix: make all warnings into errors across devx tools

tests/unit/test_release.py

@@ -84,6 +84,13 @@ class TestGetBumpedVersion:
         with pytest.raises(click.ClickException):
             get_bumped_version()
 
+    @patch("devx.ci.release.run_cmd")
+    def test_invalid_version_format_raises(self, mock_run_cmd: MagicMock) -> None:
+        """Non-semver version from git-cliff should raise."""
+        mock_run_cmd.return_value = MagicMock(returncode=0, stdout="not-a-version\n", stderr="")
+        with pytest.raises(click.ClickException, match="invalid version format"):
+            get_bumped_version()
+
 
 class TestGetChangelog:
     @patch("devx.ci.release.run_cmd")
@@ -384,7 +391,7 @@ class TestMain:
     @patch("devx.ci.release.get_bumped_version", return_value="0.2.0")
     @patch("devx.ci.release.has_unreleased_changes", return_value=True)
     @patch("devx.ci.release.run_cmd")
-    def test_dry_run_empty_changelog(
+    def test_dry_run_empty_changelog_fails(
         self,
         mock_run_cmd: MagicMock,
         mock_has: MagicMock,
@@ -397,11 +404,12 @@ class TestMain:
         mock_tag: MagicMock,
         mock_user: MagicMock,
     ) -> None:
+        """Empty changelog should fail, not warn."""
         mock_run_cmd.return_value = MagicMock(returncode=0, stdout="master\n", stderr="")
         runner = CliRunner()
         result = runner.invoke(main, ["--dry-run"])
-        assert result.exit_code == 0
-        assert "empty changelog" in result.output
+        assert result.exit_code != 0
+        assert "empty changelog" in result.output.lower()
 
     @patch.dict("os.environ", {})
     @patch("devx.ci.release.has_user_facing_changes", return_value=True)