refactor(tests): standardize formatting in test cases for clarity

backend/internal/api/handlers/docker_handler_test.go

@@ -234,7 +234,7 @@ func TestDockerHandler_ListContainers_InvalidHost(t *testing.T) {
 	h.RegisterRoutes(api)
 
 	tests := []struct {
-		name     string
+		name      string
 		hostParam string
 	}{
 		{"arbitrary IP", "host=10.0.0.1"},

backend/internal/security/url_validator_test.go

@@ -606,7 +606,7 @@ func TestIsPrivateIP_IPv6Comprehensive(t *testing.T) {
 		{"IPv4-mapped private", "::ffff:192.168.1.1", true},
 
 		// Edge cases
-		{"IPv6 unspecified", "::", false}, // Not private, just null
+		{"IPv6 unspecified", "::", false},   // Not private, just null
 		{"IPv6 multicast", "ff02::1", true}, // Multicast is blocked by IsLinkLocalMulticast()
 	}