fix(api): 统一 catalog GameMainConfig 字段

internal/api/api_test.go

@@ -567,6 +567,10 @@ func TestDiscoverCallsStatusBeforeDoctor(t *testing.T) {
 		"bundle_version":           "s8tloc7lo3",
 		"connection_group_name":    "Prod",
 		"addressables_root":        "https://prod-clientpatch.bluearchiveyostar.com/r93_fixture",
+		"game_main_config_bootstrap": map[string]any{
+			"server_info_data_url":     "https://prod-serverinfo.bluearchiveyostar.com/server-info.json",
+			"default_connection_group": "Prod",
+		},
 		"version": map[string]any{
 			"id":            "v1",
 			"resource_root": root,
@@ -614,6 +618,9 @@ func TestDiscoverCallsStatusBeforeDoctor(t *testing.T) {
 	if summary.Snapshot.DistributionStatusCode != "distribution.ready" {
 		t.Fatalf("distribution status code=%q", summary.Snapshot.DistributionStatusCode)
 	}
+	if summary.Snapshot.GameMainConfig == nil || summary.Snapshot.GameMainConfig.DefaultConnectionGroup != "Prod" {
+		t.Fatalf("game main config=%+v", summary.Snapshot.GameMainConfig)
+	}
 }
 
 func TestLoadEnvFileDoesNotOverride(t *testing.T) {