Refactor interaction prompt system to use world space prompts

- Removed the InteractPromptWidget from HUD and its references in HUDController.
- Introduced IInteractPromptView interface for world space interaction prompts.
- Implemented WorldInteractPrompt class to manage display of interaction prompts in world space.
- Updated InteractableDetector to handle showing/hiding of world space prompts based on player proximity to interactable objects.
- Created a new prefab for UI_WorldInteractPrompt to facilitate the new interaction prompt system.

Assets/_Game/Scripts/Editor/Scene/SceneObjectPlacerTool.cs

@@ -224,6 +224,14 @@ namespace BaseGames.Editor
             if (equipmentConfig  != null) AssignReference(equipmentManager,  "_config",       equipmentConfig, report);
             if (charmCatalog     != null) AssignReference(equipmentManager,  "_charmCatalog", charmCatalog,    report);
 
+            // ── 交互探测器（检测最近可交互物 + 交互键调用 IInteractable.Interact + 驱动其世界空间提示）──
+            // 扫描 TriggerZone 层上的可交互物（门/存档点/商店/传送点…）。
+            // 提示表现由各交互物自带的世界空间子节点（WorldInteractPrompt）负责，本组件不持有 UI。
+            InteractableDetector interactDetector = GetOrAddComponent<InteractableDetector>(root);
+            AssignLayerMask(interactDetector, "_interactableLayer", new[] { "TriggerZone" }, report);
+            if (inputReader != null)
+                AssignReference(interactDetector, "_inputReader", inputReader, report);
+
             if (animConfig       == null) report.Add("★ 需创建并绑定：PlayerController._animConfig（PLY_PlayerAnimationConfig）");
             if (statsConfig      == null) report.Add("★ 需创建并绑定：PlayerStats._config（PlayerStatsSO）");
             if (inputReader      == null) report.Add("★ 需手动绑定：PlayerController._inputReader / FormController._input / SkillManager._input（InputReaderSO）");
@@ -1687,6 +1695,9 @@ namespace BaseGames.Editor
             AssignAsset(savePoint, "_onSceneLoaded",        report, false, "EVT_SceneLoaded");
             AssignAsset(savePoint, "_onSavePointActivated", report, false, "EVT_SavePointActivated");
 
+            // 世界空间交互提示
+            AttachInteractPrompt(go, 1.3f, report);
+
             report.Add("已自动生成唯一 _savePointId（可按需改为语义化 ID，如 SP_Forest_Entrance）。");
 
             Selection.activeGameObject = go;
@@ -1747,6 +1758,30 @@ namespace BaseGames.Editor
             MarkDirtyAndLog("Room Transition", go, report);
         }
 
+        /// <summary>
+        /// 在交互物上挂载世界空间交互提示（UI_WorldInteractPrompt 预制体），作为子节点跟随物体显示。
+        /// 提示显隐由玩家身上的 InteractableDetector 在进入/离开最近可交互物时驱动（按 IInteractPromptView 接口）。
+        /// 幂等：已存在同名子节点则跳过。localY 为气泡相对物体的高度，可后续在场景中拖动该子节点单独微调。
+        /// </summary>
+        private static void AttachInteractPrompt(GameObject host, float localY, List<string> report)
+        {
+            if (host.transform.Find("InteractPrompt") != null) return;
+
+            var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(
+                "Assets/_Game/Prefabs/UI/UI_WorldInteractPrompt.prefab");
+            if (prefab == null)
+            {
+                report.Add("★ 未找到 UI_WorldInteractPrompt 预制体，已跳过交互提示挂载（检查 Assets/_Game/Prefabs/UI/）。");
+                return;
+            }
+
+            var go = (GameObject)PrefabUtility.InstantiatePrefab(prefab, host.transform);
+            go.name = "InteractPrompt";
+            go.transform.localPosition = new Vector3(0f, localY, 0f);
+            Undo.RegisterCreatedObjectUndo(go, "Attach InteractPrompt");
+            report.Add("已挂载世界空间交互提示（InteractPrompt 子节点）。拖动它可单独微调气泡位置/样式。");
+        }
+
         [MenuItem("BaseGames/Scene/Place/Door Transition", priority = 141)]
         public static void PlaceDoorTransition()
         {
@@ -1774,6 +1809,9 @@ namespace BaseGames.Editor
             AssignBool(door, "_autoTrigger", false);       // 默认需玩家按交互键
             AssignReference(door, "_animancer", animancer, report);
 
+            // 世界空间交互提示（按交互键模式默认显示）
+            AttachInteractPrompt(go, 1.6f, report);
+
             AssignAsset(door, "_onSceneLoadRequest", report, false, "EVT_SceneLoadRequest");
 
             report.Add("填写 _targetSceneAddress（目标场景 Addressable Key）与 _targetTransitionId（目标 PlayerSpawnPoint 的 _transitionId）。");
@@ -1843,6 +1881,10 @@ namespace BaseGames.Editor
             AssignReference(doorA, "_linkedDoor", doorB, report);
             AssignReference(doorB, "_linkedDoor", doorA, report);
 
+            // 世界空间交互提示（仅在该门切到按交互键模式 _autoTrigger=false 时才会显示）
+            AttachInteractPrompt(goA, 1.6f, report);
+            AttachInteractPrompt(goB, 1.6f, report);
+
             report.Add("LinkedDoor_A ↔ LinkedDoor_B 已互相绑定，统一挂在 LinkedDoorPair 父节点下。");
             report.Add("将两扇门移到场景中正确位置后，拖动各自的子节点 SpawnPoint 调整玩家传送到达位置。");
             report.Add("转场效果：在各门 GameObject 上添加 SceneFeedback 组件并绑定 MMF_Player（如淡入淡出），再将其拖入 _transitionOut（淡出）和 _transitionIn（淡入）字段。");