init: hgmj server initial commit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

models/v/sysconfmod/free_trial_config_test.go

@@ -0,0 +1,16 @@
+package sysconfmod
+
+import "testing"
+
+func TestFreeTrialBadgeConfigDefaultEnabled(t *testing.T) {
+	for _, item := range initData {
+		if item.VCode != string(VCodeFreeTrialBadgeEnabled) {
+			continue
+		}
+		if item.Type != CfgTypeBool || item.Value != "true" {
+			t.Fatalf("unexpected free trial badge config: type=%s value=%s", item.Type, item.Value)
+		}
+		return
+	}
+	t.Fatal("freeTrialBadgeEnabled config is not initialized")
+}