feat: Enhance branding management with editable fields and save functionality in settings dialog

tests/unit/test_settings_dialog.py

@@ -1,6 +1,7 @@
 """Tests for settings dialog."""
 
 from pathlib import Path
+from unittest.mock import patch
 
 import pytest
 
@@ -110,6 +111,34 @@ class TestSettingsDialogInitialization:
         assert "backup" in dialog.export_btn.toolTip().lower()
         assert "json" in dialog.import_btn.toolTip().lower()
 
+    def test_branding_editor_fields_are_initialized(
+        self, qtbot, sample_config, monkeypatch, tmp_path
+    ):
+        """Test branding tab exposes editable fields for the selected template."""
+        monkeypatch.setenv("WEBDROP_BRANDING_DIR", str(tmp_path / "branding"))
+        dialog = SettingsDialog(sample_config)
+        qtbot.addWidget(dialog)
+
+        assert dialog.branding_display_name_input.text() == "Default"
+        assert dialog.branding_app_name_input.text() == "WebDrop Bridge"
+
+    def test_save_branding_as_creates_custom_template(
+        self, qtbot, sample_config, monkeypatch, tmp_path
+    ):
+        """Test edited branding can be saved as a new reusable template."""
+        monkeypatch.setenv("WEBDROP_BRANDING_DIR", str(tmp_path / "branding"))
+        dialog = SettingsDialog(sample_config)
+        qtbot.addWidget(dialog)
+
+        dialog.branding_display_name_input.setText("Customer A")
+        dialog.branding_app_name_input.setText("Customer A Bridge")
+
+        with patch("PySide6.QtWidgets.QInputDialog.getText", return_value=("customer_a", True)):
+            dialog._save_branding_as()
+
+        assert dialog.branding_manager.has_template("customer_a")
+        assert dialog.branding_combo.findData("customer_a") >= 0
+
 
 class TestPathsTab:
     """Test Paths configuration tab."""