Function parse_indices_direct 

pub fn parse_indices_direct(bytes: &[u8]) -> Vec<u32>

Parse index list directly from raw bytes to Vec<u32>

This parses IFC face index data like: ((1,2,3),(2,1,4),...)

Automatically converts from 1-based IFC indices to 0-based.

Performance

• Zero intermediate allocations
• Uses inline integer parsing