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/World/InteractableDetector.cs

@@ -1,21 +1,23 @@
 using System.Collections.Generic;
-using BaseGames.Core.Events;
+using BaseGames.Core.Interaction;
 using BaseGames.Input;
 using UnityEngine;
 
 namespace BaseGames.World
 {
     /// <summary>
-    /// 挂在 Player 上，检测附近可交互物，驱动 UI 提示显示/隐藏。
+    /// 挂在 Player 上，检测附近可交互物，并驱动其世界空间提示（<see cref="IInteractPromptView"/>）显隐。
     /// 通过 InputReaderSO.InteractEvent 绑定交互输入。
+    /// <para>
+    /// 提示表现是「每个交互物自带」的世界空间子节点（跟随物体、可单独配样式），
+    /// 本组件只负责「检测最近可交互物」并通知它显示/隐藏，不持有任何 UI。
+    /// </para>
     /// </summary>
     public class InteractableDetector : MonoBehaviour
     {
-        [SerializeField] private float                        _detectRadius = 1.5f;
-        [SerializeField] private LayerMask                    _interactableLayer;
-        [SerializeField] private InputReaderSO                _inputReader;
-        [SerializeField] private InteractPromptEventChannelSO _onShowInteractPrompt;
-        [SerializeField] private VoidEventChannelSO           _onHideInteractPrompt;
+        [SerializeField] private float        _detectRadius = 1.5f;
+        [SerializeField] private LayerMask    _interactableLayer;
+        [SerializeField] private InputReaderSO _inputReader;
 
         private IInteractable _nearest;
         private IInteractable _previousNearest;
@@ -26,6 +28,9 @@ namespace BaseGames.World
         // Collider → IInteractable 缓存，避免 FindNearest 每帧重复 GetComponentInParent
         private readonly Dictionary<Collider2D, IInteractable> _componentCache = new();
 
+        // IInteractable → 其世界空间提示视图缓存（可能为 null，表示该物体未配置提示）
+        private readonly Dictionary<IInteractable, IInteractPromptView> _promptCache = new();
+
         private void OnEnable()
         {
             _inputReader.InteractEvent += TryInteract;
@@ -34,7 +39,12 @@ namespace BaseGames.World
         private void OnDisable()
         {
             _inputReader.InteractEvent -= TryInteract;
+            // 离场前隐藏当前提示，防止跨场景残留
+            ResolvePrompt(_previousNearest)?.Hide();
             _componentCache.Clear(); // 清理缓存，防止跨场景持有旧引用
+            _promptCache.Clear();
+            _previousNearest = null;
+            _nearest         = null;
         }
 
         private void Update()
@@ -48,13 +58,13 @@ namespace BaseGames.World
                 if (_previousNearest != null)
                 {
                     _previousNearest.OnPlayerExitRange();
-                    _onHideInteractPrompt?.Raise();
+                    ResolvePrompt(_previousNearest)?.Hide();
                 }
 
                 if (_nearest != null)
                 {
                     _nearest.OnPlayerEnterRange(transform);
-                    _onShowInteractPrompt?.Raise(new InteractPromptEvent("Interact", _nearest.InteractPrompt));
+                    ResolvePrompt(_nearest)?.Show(_nearest.InteractPrompt);
                 }
 
                 _previousNearest = _nearest;
@@ -98,6 +108,17 @@ namespace BaseGames.World
             return best;
         }
 
+        /// <summary>解析交互物的世界空间提示视图（在其子节点上查找一次并缓存；无则记 null）。</summary>
+        private IInteractPromptView ResolvePrompt(IInteractable interactable)
+        {
+            if (interactable == null) return null;
+            if (_promptCache.TryGetValue(interactable, out var view)) return view;
+
+            view = (interactable as Component)?.GetComponentInChildren<IInteractPromptView>(true);
+            _promptCache[interactable] = view;
+            return view;
+        }
+
         private void OnDrawGizmosSelected()
         {
             Gizmos.color = Color.cyan;