init: hgmj server initial commit

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

common/constant/redisconst/most_new_module_test.go

@@ -0,0 +1,10 @@
+package redisconst
+
+import "testing"
+
+func TestMostNewModuleVideoListKeyKeepsOriginalFormat(t *testing.T) {
+	got := GetMostNewModuleVideoListKey(1, 1, 10)
+	if want := "mostNewModuleVideoList:1:1:10"; got != want {
+		t.Fatalf("cache key = %q, want %q", got, want)
+	}
+}