# core/utils.py
"""Shared utility functions for NeuralCAD."""
from __future__ import annotations


def derive_part_name(text: str, max_chars: int = 40) -> str:
    """Derive a filesystem-safe part name from text."""
    name = text[:max_chars].strip().replace(" ", "_").lower()
    name = "".join(c for c in name if c.isalnum() or c == "_")
    return name or "part"