init: hgmj server initial commit

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

models/v/vidmod/recommend_test.go

@@ -0,0 +1,24 @@
+package vidmod
+
+import "testing"
+
+func TestCalculateRecommendScore(t *testing.T) {
+	if got, want := CalculateRecommendScore(1, 2, 3, 4), int64(34); got != want {
+		t.Fatalf("score=%d want=%d", got, want)
+	}
+	if got := CalculateRecommendScore(0, 0, 0, 0); got != 0 {
+		t.Fatalf("zero score=%d", got)
+	}
+}
+
+func TestNonNegativeHistoryValue(t *testing.T) {
+	if got := nonNegativeInt(-1); got != 0 {
+		t.Fatalf("negative history=%d want=0", got)
+	}
+	if got := maxInt64(8, nonNegativeInt(3)); got != 8 {
+		t.Fatalf("existing monotonic count overwritten: %d", got)
+	}
+	if got := maxInt64(2, nonNegativeInt(3)); got != 3 {
+		t.Fatalf("history initialization=%d want=3", got)
+	}
+}