add logic show emoji for typingPreview and file md

Assets/Scripts/TypingPreviewController.cs

@@ -13,7 +13,7 @@ namespace BrewMonster.Scripts.ChatUI
         [Tooltip("Root của box xem trước nội dung đang gõ.")]
         [SerializeField] private GameObject typingPreviewRoot;
         [Tooltip("Text hiển thị nội dung đang gõ realtime.")]
-        [SerializeField] private TextMeshProUGUI typingPreviewText;
+        [SerializeField] private TMP_InputField typingPreviewText;
         [Tooltip("Rect của preview box để neo theo keyboard.")]
         [SerializeField] private RectTransform typingPreviewRect;
         [Tooltip("Khoảng cách dọc cộng thêm cho preview box.")]
@@ -49,12 +49,12 @@ namespace BrewMonster.Scripts.ChatUI
             if (typingPreviewRoot == null || typingPreviewText == null)
                 return;
 
-            string trimmedBody = (body ?? string.Empty).Trim();
+            string previewBody = body ?? string.Empty;
             bool keyboardVisible = IsMobileKeyboardVisible();
-            bool shouldShow = keyboardVisible && isInputFocused && !string.IsNullOrEmpty(trimmedBody);
+            bool shouldShow = keyboardVisible && isInputFocused;
             typingPreviewRoot.SetActive(shouldShow);
             if (shouldShow)
-                typingPreviewText.text = trimmedBody;
+                typingPreviewText.text = previewBody;
         }
 
         bool IsMobileKeyboardVisible()