Refactored instances management

src/myfasthtml/core/utils.py

@@ -1,4 +1,5 @@
 import logging
+import re
 
 from bs4 import Tag
 from fastcore.xml import FT
@@ -234,6 +235,18 @@ def get_id(obj):
     return str(obj)
 
 
+def pascal_to_snake(name: str) -> str:
+  """Convert a PascalCase or CamelCase string to snake_case."""
+  if name is None:
+    return None
+  
+  name = name.strip()
+  # Insert underscore before capital letters (except the first one)
+  s1 = re.sub(r'(.)([A-Z][a-z]+)', r'\1_\2', name)
+  # Handle consecutive capital letters (like 'HTTPServer' -> 'http_server')
+  s2 = re.sub(r'([a-z0-9])([A-Z])', r'\1_\2', s1)
+  return s2.lower()
+
 @utils_rt(Routes.Commands)
 def post(session, c_id: str, client_response: dict = None):
   """