feat(desktop): 河畔植被与中式道具点缀

图集新增柳树（垂枝两段）、灌木、花丛、芦苇、石凳、灯笼七类图块并经复制规则进构建；场景加入两株垂柳、两丛灌木、两处花丛、水中两簇芦苇、河畔石凳与两盏岸边灯笼，芦苇立于水面、灯笼立于岸道，全部入图集无程序几何占位。

1 files changed, 24 insertions, 2 deletions

diff --git a/src/LivingVillage.Desktop.Tests/PrototypeTests.fs b/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
index 7959d27..4d698ad 100644
--- a/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
+++ b/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
@@ -301,8 +301,30 @@ type PrototypeTests () =
             Assert.IsTrue(footprint.Contains({ X = door.X + dx; Y = door.Y - 2 } : TilePosition), sprintf "missing ridge tile dx=%d" dx)
             Assert.IsTrue(footprint.Contains({ X = door.X + dx; Y = door.Y - 1 } : TilePosition), sprintf "missing eave tile dx=%d" dx)
             Assert.IsTrue(footprint.Contains({ X = door.X + dx; Y = door.Y } : TilePosition), sprintf "missing wall tile dx=%d" dx)
-        // 12 house tiles + 3 bridge + 3 bamboo + 2 garden.
-        Assert.AreEqual<int>(20, footprint.Count)
+        // 12 house + 3 bridge + 3 bamboo + 2 garden + 2x2 willow + 2 shrub + 2 flowers + 2 reeds + 1 bench + 2 lanterns.
+        Assert.AreEqual<int>(33, footprint.Count)
+
+    [<TestMethod>]
+    member _.VegetationAndRiversidePropsDecorateTheScene () =
+        let plan = VillageArt.sampleRenderPlan ()
+        let kinds = plan.Props |> List.map (fun prop -> prop.Kind)
+        let count kind = kinds |> List.filter (fun candidate -> candidate = kind) |> List.length
+        let grounds = plan.Grounds |> List.map fst |> Set.ofList
+
+        Assert.AreEqual<int>(2, count VillageArt.WillowTree)
+        Assert.IsTrue(count VillageArt.ShrubPatch >= 2)
+        Assert.IsTrue(count VillageArt.FlowerBush >= 2)
+        Assert.AreEqual<int>(2, count VillageArt.ReedCluster)
+        Assert.AreEqual<int>(1, count VillageArt.StoneBench)
+        Assert.AreEqual<int>(2, count VillageArt.RiverLantern)
+
+        // Reeds must root in water; lanterns stand on the bank path.
+        for prop in plan.Props do
+            let tile = VillageArt.worldTile plan prop.Position
+            match prop.Kind with
+            | VillageArt.ReedCluster -> Assert.IsTrue(grounds.Contains(prop.Position), "reeds must sit on water tiles")
+            | VillageArt.RiverLantern -> Assert.IsTrue(plan.Grounds |> List.contains (prop.Position, VillageArt.StonePath), "lanterns must stand on the bank path")
+            | _ -> ()
 
     [<TestMethod>]
     member _.WaterRippleFramesAreDeterministicAndTwoPhase () =