Update utils.py

Fix resource_path to resolve assets relative to Tool/ when running from source

Author: woshimajintao

Tool/utils.py

@@ -17,12 +17,16 @@
 # --- Helper Functions ---
 def resource_path(relative_path):
     """Get absolute path to resource, works for dev and for PyInstaller."""
-    try:
+    # PyInstaller runtime
+    if hasattr(sys, "_MEIPASS"):
         base_path = sys._MEIPASS
-    except Exception:
-        base_path = os.path.abspath(".")
+    else:
+        # Source run: base is Tool/ (where utils.py lives)
+        base_path = os.path.dirname(os.path.abspath(__file__))
+
     return os.path.join(base_path, relative_path)
 
+
 def get_square_remove_btn_style():
     """Returns CSS string for the small 'x' button."""
     return """
@@ -65,4 +69,4 @@ def natural_sort_key(s):
     # Safety check for None or non-string
     if not isinstance(s, str):
         return []
-    return [int(text) if text.isdigit() else text.lower() for text in re.split('([0-9]+)', s)]
+    return [int(text) if text.isdigit() else text.lower() for text in re.split('([0-9]+)', s)]