feat: Add branding import/export functionality and enhance settings dialog with new fields

tests/unit/test_branding_manager.py

@@ -1,5 +1,7 @@
 """Tests for runtime branding template management."""
 
+from pathlib import Path
+
 import pytest
 
 from webdrop_bridge.config import Config, ConfigurationError
@@ -114,6 +116,21 @@ def test_delete_custom_branding_removes_it(tmp_path):
     assert not manager.has_template("customer_b")
 
 
+def test_build_template_preserves_app_and_window_titles(tmp_path):
+    """Custom brandings should keep their editable app and window title values."""
+    manager = BrandingManager(base_dir=tmp_path)
+
+    template = manager.build_template(
+        template_id="Customer C",
+        display_name="Customer C",
+        app_name="Customer Bridge",
+        window_title="Customer Bridge Desktop",
+    )
+
+    assert template.app_name == "Customer Bridge"
+    assert template.window_title == "Customer Bridge Desktop"
+
+
 def test_invalid_logo_file_is_rejected(tmp_path):
     """Non-existent logo files should not be accepted for saved brandings."""
     manager = BrandingManager(base_dir=tmp_path)
@@ -124,3 +141,32 @@ def test_invalid_logo_file_is_rejected(tmp_path):
             display_name="Customer C",
             logo_path=str(tmp_path / "missing-logo.png"),
         )
+
+
+def test_exported_branding_can_be_imported_for_another_user(tmp_path):
+    """Exported brandings should be shareable and importable by another user."""
+    source_logo = tmp_path / "shared-logo.png"
+    source_logo.write_bytes(b"fake-png-data")
+
+    source_manager = BrandingManager(base_dir=tmp_path / "source")
+    template = source_manager.build_template(
+        template_id="Customer D",
+        display_name="Customer D",
+        app_name="Customer Bridge",
+        window_title="Customer Window",
+        logo_path=str(source_logo),
+    )
+    source_manager.save_template(template)
+
+    export_path = tmp_path / "export" / "customer_d.json"
+    source_manager.export_template("customer_d", export_path)
+
+    target_manager = BrandingManager(base_dir=tmp_path / "target")
+    imported = target_manager.import_template(export_path)
+
+    assert imported.template_id == "customer_d"
+    assert imported.display_name == "Customer D"
+    assert imported.app_name == "Customer Bridge"
+    assert imported.window_title == "Customer Window"
+    assert Path(imported.logo_path).exists()
+    assert target_manager.has_template("customer_d")