实现单局 Run 模型的基础落地

- 核心改动在 RunModel.cs、RunStateFactory.cs 和 RunStateAdvanceService.cs。现在项目里有了 RunNodeType / RunNodeStatus / RunNodeSeed / RunNodeState / RunState，并支持用预置节点序列创建 Run，以及在节点完成后推进、更新局内库存快照、标记通关或失败。

- 库存边界也补上了。PlayerInventoryComponent.cs 新增了 ReplaceInventorySnapshot(...)，底层通过 PlayerInventoryStateStore.cs 重建工作副本，避免后续把 Run 真值硬塞回 PlayerInventory 内部状态。

- 节点事件载体已经扩展为可承载 Run 上下文，同时保留原来的无参 Create() 以兼容现有调用点。相关改动在 NodeEnterEventArgs.cs 和 NodeCompleteEventArgs.cs。

- 我还补了纯模型编辑器测试，覆盖 Run 创建、节点推进、失败标记和事件快照克隆，文件在 RunStateTests.cs。

Assets/GameMain/Tests/Editor/RunStateTests.cs

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+using System.Collections.Generic;
+using GeometryTD.CustomEvent;
+using GeometryTD.Definition;
+using GeometryTD.Procedure;
+using NUnit.Framework;
+
+namespace GeometryTD.Tests.Editor
+{
+    public sealed class RunStateTests
+    {
+        [Test]
+        public void Factory_Creates_RunState_With_First_Node_Available()
+        {
+            BackpackInventoryData sourceInventory = new BackpackInventoryData
+            {
+                Gold = 120
+            };
+            sourceInventory.ParticipantTowerInstanceIds.Add(11);
+
+            RunState runState = RunStateFactory.Create(
+                LevelThemeType.Plain,
+                sourceInventory,
+                new List<RunNodeSeed>
+                {
+                    new RunNodeSeed { NodeType = RunNodeType.Combat, LinkedLevelId = 1 },
+                    new RunNodeSeed { NodeType = RunNodeType.Event },
+                    new RunNodeSeed { NodeType = RunNodeType.BossCombat, LinkedLevelId = 4 }
+                },
+                "run-test");
+
+            Assert.That(runState.RunId, Is.EqualTo("run-test"));
+            Assert.That(runState.ThemeType, Is.EqualTo(LevelThemeType.Plain));
+            Assert.That(runState.CurrentNodeIndex, Is.EqualTo(0));
+            Assert.That(runState.IsCompleted, Is.False);
+            Assert.That(runState.Nodes.Count, Is.EqualTo(3));
+            Assert.That(runState.Nodes[0].Status, Is.EqualTo(RunNodeStatus.Available));
+            Assert.That(runState.Nodes[1].Status, Is.EqualTo(RunNodeStatus.Locked));
+            Assert.That(runState.RunInventorySnapshot.Gold, Is.EqualTo(120));
+
+            sourceInventory.Gold = 1;
+            sourceInventory.ParticipantTowerInstanceIds[0] = 99;
+
+            Assert.That(runState.RunInventorySnapshot.Gold, Is.EqualTo(120));
+            Assert.That(runState.RunInventorySnapshot.ParticipantTowerInstanceIds[0], Is.EqualTo(11));
+        }
+
+        [Test]
+        public void AdvanceService_Completes_Run_And_Unlocks_Next_Node()
+        {
+            RunState runState = RunStateFactory.Create(
+                LevelThemeType.Plain,
+                new BackpackInventoryData { Gold = 50 },
+                new[]
+                {
+                    new RunNodeSeed { NodeId = 101, NodeType = RunNodeType.Combat, LinkedLevelId = 1 },
+                    new RunNodeSeed { NodeId = 102, NodeType = RunNodeType.Shop },
+                    new RunNodeSeed { NodeId = 103, NodeType = RunNodeType.BossCombat, LinkedLevelId = 4 }
+                });
+
+            bool firstCompleted = RunStateAdvanceService.TryCompleteCurrentNode(
+                runState,
+                true,
+                new BackpackInventoryData { Gold = 80 });
+
+            Assert.That(firstCompleted, Is.True);
+            Assert.That(runState.Nodes[0].Status, Is.EqualTo(RunNodeStatus.Completed));
+            Assert.That(runState.CurrentNodeIndex, Is.EqualTo(1));
+            Assert.That(runState.Nodes[1].Status, Is.EqualTo(RunNodeStatus.Available));
+            Assert.That(runState.RunInventorySnapshot.Gold, Is.EqualTo(80));
+
+            RunStateAdvanceService.TryCompleteCurrentNode(runState, true, new BackpackInventoryData { Gold = 95 });
+            RunStateAdvanceService.TryCompleteCurrentNode(runState, true, new BackpackInventoryData { Gold = 130 });
+
+            Assert.That(runState.IsCompleted, Is.True);
+            Assert.That(runState.CurrentNodeIndex, Is.EqualTo(3));
+            Assert.That(runState.CompletedNodeCount, Is.EqualTo(3));
+            Assert.That(runState.RunInventorySnapshot.Gold, Is.EqualTo(130));
+        }
+
+        [Test]
+        public void AdvanceService_Failure_Marks_Current_Node_Failed_Without_Completing_Run()
+        {
+            RunState runState = RunStateFactory.Create(
+                LevelThemeType.Plain,
+                new BackpackInventoryData { Gold = 20 },
+                new[]
+                {
+                    new RunNodeSeed { NodeType = RunNodeType.Combat }
+                });
+
+            bool result = RunStateAdvanceService.TryCompleteCurrentNode(
+                runState,
+                false,
+                new BackpackInventoryData { Gold = 5 });
+
+            Assert.That(result, Is.True);
+            Assert.That(runState.IsCompleted, Is.False);
+            Assert.That(runState.CurrentNodeIndex, Is.EqualTo(0));
+            Assert.That(runState.CurrentNode.Status, Is.EqualTo(RunNodeStatus.Failed));
+            Assert.That(runState.RunInventorySnapshot.Gold, Is.EqualTo(5));
+        }
+
+        [Test]
+        public void NodeCompleteEventArgs_Clones_Inventory_And_Clears_State()
+        {
+            BackpackInventoryData inventory = new BackpackInventoryData { Gold = 66 };
+            NodeCompleteEventArgs eventArgs = NodeCompleteEventArgs.Create(
+                "run-1",
+                7,
+                RunNodeType.Shop,
+                true,
+                inventory);
+
+            inventory.Gold = 1;
+
+            Assert.That(eventArgs.RunId, Is.EqualTo("run-1"));
+            Assert.That(eventArgs.NodeId, Is.EqualTo(7));
+            Assert.That(eventArgs.NodeType, Is.EqualTo(RunNodeType.Shop));
+            Assert.That(eventArgs.Succeeded, Is.True);
+            Assert.That(eventArgs.InventorySnapshotAfterNode.Gold, Is.EqualTo(66));
+
+            eventArgs.Clear();
+
+            Assert.That(eventArgs.RunId, Is.Null);
+            Assert.That(eventArgs.NodeId, Is.EqualTo(0));
+            Assert.That(eventArgs.NodeType, Is.EqualTo(RunNodeType.None));
+            Assert.That(eventArgs.Succeeded, Is.False);
+            Assert.That(eventArgs.InventorySnapshotAfterNode, Is.Null);
+        }
+    }
+}

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