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/Dialogue/InteractionPromptController.cs

@@ -1,7 +1,8 @@
 using TMPro;
 using UnityEngine;
-using UnityEngine.InputSystem;
 using UnityEngine.UI;
+using BaseGames.Core;
+using BaseGames.UI;
 
 namespace BaseGames.Dialogue
 {
@@ -26,10 +27,9 @@ namespace BaseGames.Dialogue
         [SerializeField] private TMP_Text   _label;
 
         [Header("按键图标")]
-        [Tooltip("键盘/鼠标设备激活时使用的按键图标 Sprite。")]
-        [SerializeField] private Sprite _keyboardIcon;
-        [Tooltip("手柄设备激活时使用的按键图标 Sprite。")]
-        [SerializeField] private Sprite _gamepadIcon;
+        [Tooltip("用于查询按键图标的输入动作名（与 InputReader 的 Action 对应）。\n" +
+                 "图标走 IInputIconService，随设备切换 / 改键自动刷新。")]
+        [SerializeField] private string _actionName = "Interact";
 
         [Header("位置与动画")]
         [Tooltip("相对于本组件 transform 的世界空间偏移。调整此值可控制气泡与 NPC 的相对位置。")]
@@ -42,10 +42,11 @@ namespace BaseGames.Dialogue
         [SerializeField] [Min(0f)] private float _fadeOutDuration = 0.08f;
 
         // ── 运行时状态 ────────────────────────────────────────────────────────
-        private InteractableNPC _npc;
-        private bool            _visible;
-        private float           _alpha;
-        private Camera          _cam;
+        private InteractableNPC   _npc;
+        private bool              _visible;
+        private float             _alpha;
+        private Camera            _cam;
+        private IInputIconService _iconService;
 
         // ── Lifecycle ─────────────────────────────────────────────────────────
 
@@ -69,6 +70,11 @@ namespace BaseGames.Dialogue
                 _npc.PlayerEnteredRange -= OnPlayerEntered;
                 _npc.PlayerExitedRange  -= OnPlayerExited;
             }
+            if (_iconService != null)
+            {
+                _iconService.OnIconSetChanged -= UpdateIcon;
+                _iconService = null;
+            }
         }
 
         private void Update()
@@ -151,9 +157,19 @@ namespace BaseGames.Dialogue
 
         private void UpdateIcon()
         {
-            if (_icon == null) return;
-            bool isGamepad = Gamepad.current != null && Gamepad.current.enabled;
-            _icon.sprite = isGamepad ? _gamepadIcon : _keyboardIcon;
+            if (_icon == null || string.IsNullOrEmpty(_actionName)) return;
+
+            // 延迟绑定：首次需要时获取服务（确保 ServiceLocator 已初始化），并订阅设备/改键刷新
+            if (_iconService == null)
+            {
+                _iconService = ServiceLocator.GetOrDefault<IInputIconService>();
+                if (_iconService != null)
+                    _iconService.OnIconSetChanged += UpdateIcon;
+            }
+
+            var sprite = _iconService?.GetActionIcon(_actionName);
+            if (sprite != null) { _icon.sprite = sprite; _icon.enabled = true; }
+            else                { _icon.enabled = false; }
         }
 
         private void ApplyAlpha(float a)