diff --git a/AgentScripts/WL816f_Final.cs b/AgentScripts/WL816f_Final.cs
new file mode 100644
index 000000000..10f86f899
--- /dev/null
+++ b/AgentScripts/WL816f_Final.cs
@@ -0,0 +1,114 @@
+// WL-816f — 마무리 실측: ⓐ성능 전(밀도 2.5)/후(1.8) ⓑ밭 칸 표시 유지 ⓒ확장 시 새 타일에 풀
+public static class WL816f_Final
+{
+    public static void Start()
+    {
+        var go = UnityEngine.GameObject.Find("~WL816fFinal");
+        if (go != null) UnityEngine.Object.DestroyImmediate(go);
+        go = new UnityEngine.GameObject("~WL816fFinal");
+        go.AddComponent<WL816f_FinalRunner>();
+    }
+}
+
+public class WL816f_FinalRunner : UnityEngine.MonoBehaviour
+{
+    static System.Text.StringBuilder sb;
+    void Start() { StartCoroutine(Co()); }
+
+    System.Collections.IEnumerator Co()
+    {
+        sb = new System.Text.StringBuilder();
+        if (UnityEngine.SceneManagement.SceneManager.sceneCount < 2)
+        {
+            var op = UnityEngine.SceneManagement.SceneManager.LoadSceneAsync("Level01", UnityEngine.SceneManagement.LoadSceneMode.Additive);
+            while (op != null && !op.isDone) yield return null;
+        }
+        for (int i = 0; i < 6; i++) yield return new UnityEngine.WaitForSeconds(1f);
+
+        var g = UnityEngine.Object.FindFirstObjectByType<WL.Look.Farm.WLIslandGrass>(UnityEngine.FindObjectsInactive.Include);
+        var src = WL.Look.Farm.WLIslandLookSettings.Instance;
+        var rt = UnityEngine.Object.Instantiate(src);   // 에셋 무변경
+        g.cfg = rt;
+        var cam = LiveCam();
+
+        // ── ⓐ 성능: 816e(2.5) vs 816f(1.8) vs 풀 없음 ───────────────
+        L("[성능] 같은 카메라(" + (cam ? cam.name : "?") + ") · 1080×1920 오프스크린 60프레임 평균");
+        float[] dens = { 2.5f, 1.8f };
+        for (int k = 0; k < dens.Length; k++)
+        {
+            SetD(rt, dens[k]); g.Rebuild(); yield return null; yield return null;
+            float ms = Bench(cam, 60);
+            L("  밀도 " + dens[k].ToString("F2") + " : 인스턴스 " + WL.Look.Farm.WLIslandGrass.Instances
+              + " · 삼각형 " + WL.Look.Farm.WLIslandGrass.Triangles
+              + " · 드로우콜 +" + WL.Look.Farm.WLIslandGrass.DrawnConfigs
+              + " · " + ms.ToString("F3") + " ms/frame (" + (1000f / ms).ToString("F0") + " fps 환산)");
+        }
+        g.enabled = false; yield return null; yield return null;
+        float off = Bench(cam, 60);
+        L("  풀 없음         : " + off.ToString("F3") + " ms/frame");
+        g.enabled = true; SetD(rt, 1.8f); g.Rebuild(); yield return null;
+
+        // ── ⓑ 밭 칸 표시가 남아 있나(두 색이 서로 달라야 한다) ──────
+        L("");
+        var soils = UnityEngine.Object.FindObjectsByType<CryingSnow.FarmingIsland.Soil>(UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
+        var seen = new System.Collections.Generic.Dictionary<string, int>();
+        for (int i = 0; i < soils.Length; i++)
+        {
+            var r = soils[i].GetComponentInChildren<UnityEngine.Renderer>(true);
+            if (r == null) continue;
+            var h = UnityEngine.ColorUtility.ToHtmlStringRGB(r.material.color);
+            seen[h] = seen.ContainsKey(h) ? seen[h] + 1 : 1;
+        }
+        L("[밭 칸 표시] Soil " + soils.Length + "개의 색 종류 " + seen.Count + " (2 여야 칸 구분이 살아 있다)");
+        foreach (var kv in seen) L("   " + kv.Key + " ×" + kv.Value);
+
+        // ── ⓒ 확장: 타일 하나를 잠갔다 다시 열어 풀이 따라오는지 ────
+        L("");
+        var islands = UnityEngine.Object.FindObjectsByType<CryingSnow.FarmingIsland.Island>(UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
+        CryingSnow.FarmingIsland.Island target = null;
+        for (int i = 0; i < islands.Length; i++)
+            if (islands[i].IsUnlocked && islands[i].gameObject.activeInHierarchy && islands[i].transform.position != UnityEngine.Vector3.zero) { target = islands[i]; break; }
+        int before = WL.Look.Farm.WLIslandGrass.Tiles;
+        if (target != null)
+        {
+            target.gameObject.SetActive(false);
+            yield return new UnityEngine.WaitForSeconds(2.5f);
+            int mid = WL.Look.Farm.WLIslandGrass.Tiles;
+            target.gameObject.SetActive(true);
+            yield return new UnityEngine.WaitForSeconds(3f);
+            int after = WL.Look.Farm.WLIslandGrass.Tiles;
+            L("[확장] 풀 깔린 타일 " + before + " → (타일 1개 잠금) " + mid + " → (다시 열기) " + after
+              + (after == before ? "  ✔ 새로 열린 타일에 풀이 자동으로 깔린다" : "  🔴 복귀 실패"));
+        }
+        else L("[확장] 대상 타일 없음(미확인)");
+
+        System.IO.File.WriteAllText("AgentScripts/WL816f_FINAL.txt", sb.ToString());
+        UnityEngine.Debug.Log("[816f final]\n" + sb.ToString());
+    }
+
+    static void L(string s) { sb.AppendLine(s); }
+    static void SetD(WL.Look.Farm.WLIslandLookSettings c, float d)
+    {
+        for (int i = 0; i < c.scatter.Length; i++)
+            if (c.scatter[i] != null && (c.scatter[i].label.Contains("풀") || c.scatter[i].label.Contains("꽃"))) c.scatter[i].density = d;
+    }
+    static UnityEngine.Camera LiveCam()
+    {
+        var cams = UnityEngine.Object.FindObjectsByType<UnityEngine.Camera>(UnityEngine.FindObjectsInactive.Exclude, UnityEngine.FindObjectsSortMode.None);
+        UnityEngine.Camera t = null;
+        for (int i = 0; i < cams.Length; i++) { var c = cams[i]; if (!c.enabled || c.targetTexture != null) continue; if (t == null || c.depth > t.depth) t = c; }
+        return t;
+    }
+    static float Bench(UnityEngine.Camera cam, int frames)
+    {
+        if (cam == null) return -1f;
+        var rt = new UnityEngine.RenderTexture(1080, 1920, 24, UnityEngine.RenderTextureFormat.ARGB32, UnityEngine.RenderTextureReadWrite.sRGB);
+        rt.Create(); var prev = cam.targetTexture; cam.targetTexture = rt;
+        for (int i = 0; i < 10; i++) cam.Render();
+        var sw = System.Diagnostics.Stopwatch.StartNew();
+        for (int i = 0; i < frames; i++) cam.Render();
+        sw.Stop(); cam.targetTexture = prev;
+        rt.Release(); UnityEngine.Object.DestroyImmediate(rt);
+        return (float)sw.Elapsed.TotalMilliseconds / frames;
+    }
+}